Properties of the Number 18818

Eighteen Thousand Eight Hundred Eighteen

Basics

Value: 18817 → 18818 → 18819

Parity: even

Prime: No

Previous Prime: 18803

Next Prime: 18839

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 97 ²

Divisors: 1, 2, 97, 194, 9409, 18818

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100110000010

Octal: 44602

Duodecimal: AA82

Hexadecimal: 4982

Square: 354117124

Square Root: 137.17871555019022

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

Number of partitions of n having an integer median. A325347

a(n) = 2·prime(n)². A79704

2·p², for p an odd prime. A143928

A modified Engel expansion for sqrt(3) - 1. A220335

a(0) = 1, a(n) = 24·n² + 2 for n>0. A10014

Numbers n such that there are precisely 5 groups of orders n and n + 1. A295991

a(0) = 3, a(1) = 8, a(n+2) = 4·a(n+1) - a(n) - 2. A102206

Numbers consisting of ones and eights. A213084

Base 4 expansion of 1/n has equal percentage of each digit 0,1,2,3. A74709

Record high values of A379248. A379294