Properties of the Number 1808

One Thousand Eight Hundred Eight

Basics

Value: 1807 → 1808 → 1809

Parity: even

Prime: No

Previous Prime: 1801

Next Prime: 1811

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ⁴ × 113

Divisors: 1, 2, 4, 8, 16, 113, 226, 452, 904, 1808

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 11100010000

Octal: 3420

Duodecimal: 1068

Hexadecimal: 710

Square: 3268864

Square Root: 42.5205832509386

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

a(n) = n² + n + 2. A14206

Coordination sequence for "ubt" 3D uniform tiling. A299291

Numbers which are the sum of 3 nonzero 4th powers. A3337

Product of the 4th power of a prime (A030514) and a different prime (p⁴*q). A178739

Number of partitions of n into Fibonacci parts (with a single type of 1). A3107

G.f. A(x,y) satisfies: A( x - y·A(x,y)², y) = x + (1-y)*A(x,y)², where the coefficients T(n,k) of xⁿ*y^k form a triangle read by rows n>=1, for k=0..n-1. A277295

Number of partitions of n such that the number of parts and the greatest part are coprime. A200750

Smaller of two consecutive numbers each divisible by a cube greater than one. A68140

Number of partitions of 2·n with no part divisible by 3 and all odd parts occurring with even multiplicities. A98151

Number of integer partitions of n for which every restriction to a subinterval has a different sum. A325768