Properties of the Number 18061

Eighteen Thousand Sixty-One

Basics

Value: 18060 → 18061 → 18062

Parity: odd

Prime: Yes

Previous Prime: 18059

Next Prime: 18077

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 18061

Divisors: 1, 18061

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011010001101

Octal: 43215

Duodecimal: A551

Hexadecimal: 468d

Square: 326199721

Square Root: 134.39121995130486

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 domino tilings of 4 X (n-1) board. A5178

Centered 20-gonal (or icosagonal) numbers. A69133

a(n) = 15·n² - 9·n + 1. A134154

Array T(m,n) read by antidiagonals: number of domino tilings of the 2m X 2n grid (m>=0, n>=0). A187617

Prime number spiral (clockwise, Northeast spoke). A54553

Triangle T(m,n) read by rows: number of domino tilings of the m X n grid (0 <= m <= n). A187616

Primes p such that p1=Floor[p/2]+p is prime and p2=Ceiling[p1/2]+p1 is prime. A158712

Triangle T(m,n) read by rows: number of domino tilings of the 2m X 2n grid (0 <= m <= n). A187618

Numerators of lower primes-only best approximates (POBAs) to π; see Comments. A265808

Numerators of primes-only best approximates (POBAs) to π; see Comments. A265812