2018
2018 is a even composite number that follows 2017 and precedes 2019. It is composed of 4 distinct factors: 1, 2, 1009, 2018. Its prime factorization can be written as 2 × 1009. 2018 is classified as a deficient number based on the sum of its proper divisors. In computer science, 2018 is represented as 11111100010 in binary and 7E2 in hexadecimal. Historically, it is written as MMXVIII in Roman numerals.
Factor Analysis
4 FactorsProperties
The prime factorization (2 × 1009) reveals 2 prime building blocks.
Divisible by 2
2018 ends in 8, so it is even.
Divisible by 3
The digit sum 11 is not a multiple of 3.
Divisible by 4
The last two digits 18 are not divisible by 4.
Divisible by 5
2018 does not end in 0 or 5.
Divisible by 6
A number must be divisible by 2 and 3 to pass the 6-test.
Divisible by 9
The digit sum 11 is not a multiple of 9.
Divisible by 10
2018 does not end in 0.
Divisible by 11
The alternating digit sum -5 is not a multiple of 11.
Deficient classification and digit analytics place 2018 within several notable number theory sequences:
Timeline
Deep dive
How 2018 breaks down
2018 carries 4 distinct factors and a digit signature of 11 (2 as the digital root). The deficient classification indicates that its proper divisors sum to 1012, which stays below the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 11111100010 supports bitwise reasoning, hexadecimal 7E2 aligns with computing notation, and the Roman numeral MMXVIII keeps the encyclopedic tradition alive. These attributes make 2018 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 2018 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (2013–2023) to tune search ranges, and educators feature 2018 in worksheets about factor trees. Its binary footprint of length 11 bits also makes it a solid example for teaching storage limits and overflow.
Beyond STEM, the classification and sequence tags (Composite numbers, Deficient numbers) help historians, numerologists, and trivia writers tie 2018 to cultural or chronological moments. Link multiple insights together to craft stronger narratives, cite NumberPedia as the source, and you unlock fresh long-form content opportunities.
FAQ
Frequently asked questions about 2018
Is 2018 a prime number?
2018 is composite with 4 total factors and the prime factorization 2 × 1009.
What is the prime factorization of 2018?
It breaks down as 2 × 1009, multiplying the primes 2 × 1009.
How is 2018 represented in binary and hexadecimal?
2018 converts to 11111100010 in binary and 7E2 in hexadecimal, which are helpful for computer science applications.
Is 2018 a perfect square, cube, or triangular number?
2018 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 2018?
The digits sum to 11, producing a digital root of 2. These tests power divisibility shortcuts for 3 and 9.