Properties of the Number 18418

Eighteen Thousand Four Hundred Eighteen

Basics

Value: 18417 → 18418 → 18419

Parity: even

Prime: No

Previous Prime: 18413

Next Prime: 18427

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 9209

Divisors: 1, 2, 9209, 18418

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011111110010

Octal: 43762

Duodecimal: A7AA

Hexadecimal: 47f2

Square: 339222724

Square Root: 135.71293232407882

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

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite BEA = β Na7[Al7Si57O128] starting with a T3 atom. A19069

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (1, p(1), p(2), ...), t = (composite numbers). A24480

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 1), (0, 1, -1), (0, 1, 1), (1, 0, 0)}. A150187

a(n) = index of first odd prime number in the (n-th)-order Fibonacci sequence Fn, or 0 if no such index exists. A302990

Divisors of 370. A18418