Properties of the Number 13618

Thirteen Thousand Six Hundred Eighteen

Basics

Value: 13617 → 13618 → 13619

Parity: even

Prime: No

Previous Prime: 13613

Next Prime: 13619

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 11 × 619

Divisors: 1, 2, 11, 22, 619, 1238, 6809, 13618

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11010100110010

Octal: 32462

Duodecimal: 7A6A

Hexadecimal: 3532

Square: 185449924

Square Root: 116.69618674146983

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Maximum sum of products of successive pairs in a permutation of order n+1. A101986

Number of 1-separable partitions of n; see Comments. A239467

a(0) = 1; for n >= 1, a(n) = ∑_{j=0..a(n-1) mod n} a(j). A57176

a(n) = (binomial(2n, n) - 2) mod n³. A246133

a(n) = 10000·log₁₀(n) rounded up. A4230

Sequence d_n arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition). A129880

Number of compositions (ordered partitions) of n into hexagonal pyramidal numbers (A002412). A322854

Numbers k such that A084937(3k) > A084937(3k+1). A249689

Number of partitions of n into parts not of the form 17k, 17k+2 or 17k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 7 are greater than 1. A35963

Triangle of coefficients in expansion of (1+11x)ⁿ. A13618