Properties of the Number 18195

Eighteen Thousand One Hundred Ninety-Five

Basics

Value: 18194 → 18195 → 18196

Parity: odd

Prime: No

Previous Prime: 18191

Next Prime: 18199

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 1213

Divisors: 1, 3, 5, 15, 1213, 3639, 6065, 18195

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011100010011

Octal: 43423

Duodecimal: A643

Hexadecimal: 4713

Square: 331058025

Square Root: 134.88884312647951

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

Numbers that are the sum of six fourth powers in four or more ways. A345561

Numbers that are the sum of six fourth powers in exactly four ways. A345816

a(n) = Fibonacci(n) + n². A160536

Number of compositions of n where the smallest part is greater than the number of parts. A98132

a(n) = 81·n² - 2·n. A157507

Number of partitions of n that include a pair of consecutive integers. A237666

Square root of n has the same nonzero digit in each of the first 4 places to the right of the decimal point. A73585

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 465", based on the 5-celled von Neumann neighborhood. A272316

Expansion of ∑_k>=1 μ(k)*log(1 + x^k/(1 - x^k)³)/k. A308290

Possible numbers of complements of topologies on 4 points. A18195