Properties of the Number 18069

Eighteen Thousand Sixty-Nine

Basics

Value: 18068 → 18069 → 18070

Parity: odd

Prime: No

Previous Prime: 18061

Next Prime: 18077

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 19 × 317

Divisors: 1, 3, 19, 57, 317, 951, 6023, 18069

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011010010101

Octal: 43225

Duodecimal: A559

Hexadecimal: 4695

Square: 326488761

Square Root: 134.4209805052768

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 k such that Fibonacci(prime(k)) is prime. A119984

G.f.: ∑_n=-oo..+oo x^n*(n+1/2) * C(x)^3·n-3, where C(x) = 1 + x·C(x)² is the g.f. of the Catalan numbers (A000108). A355348

Run length of the n-th run of Fibonacci composites. A182600

The fixed points of A355702. A356017

G.f. satisfies A(x) = 1 + x·A(x)³ / (1 - x·A(x)³)². A367280

Spiral sieve using Fibonacci numbers. A5623

Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1100-0111-0100 pattern in any orientation. A146465

Expansion of 1/((1-3·x)*(1-8·x)*(1-10·x)). A18069

a(n) = n⁸ - 1. A258809