1618
1618 is a even composite number that follows 1617 and precedes 1619. It is composed of 4 distinct factors: 1, 2, 809, 1618. Its prime factorization can be written as 2 × 809. 1618 is classified as a deficient number based on the sum of its proper divisors. In computer science, 1618 is represented as 11001010010 in binary and 652 in hexadecimal. Historically, it is written as MDCXVIII in Roman numerals.
Factor Analysis
4 FactorsProperties
The prime factorization (2 × 809) reveals 2 prime building blocks.
Divisible by 2
1618 ends in 8, so it is even.
Divisible by 3
The digit sum 16 is not a multiple of 3.
Divisible by 4
The last two digits 18 are not divisible by 4.
Divisible by 5
1618 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 16 is not a multiple of 9.
Divisible by 10
1618 does not end in 0.
Divisible by 11
The alternating digit sum -12 is not a multiple of 11.
Deficient classification and digit analytics place 1618 within several notable number theory sequences:
Timeline
Deep dive
How 1618 breaks down
1618 carries 4 distinct factors and a digit signature of 16 (7 as the digital root). The deficient classification indicates that its proper divisors sum to 812, which stays below the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 11001010010 supports bitwise reasoning, hexadecimal 652 aligns with computing notation, and the Roman numeral MDCXVIII keeps the encyclopedic tradition alive. These attributes make 1618 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 1618 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (1613–1623) to tune search ranges, and educators feature 1618 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 1618 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 1618
Is 1618 a prime number?
1618 is composite with 4 total factors and the prime factorization 2 × 809.
What is the prime factorization of 1618?
It breaks down as 2 × 809, multiplying the primes 2 × 809.
How is 1618 represented in binary and hexadecimal?
1618 converts to 11001010010 in binary and 652 in hexadecimal, which are helpful for computer science applications.
Is 1618 a perfect square, cube, or triangular number?
1618 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 1618?
The digits sum to 16, producing a digital root of 7. These tests power divisibility shortcuts for 3 and 9.