Properties of the Number 19171

Nineteen Thousand One Hundred Seventy-One

Basics

Value: 19170 → 19171 → 19172

Parity: odd

Prime: No

Previous Prime: 19163

Next Prime: 19181

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 19 × 1009

Divisors: 1, 19, 1009, 19171

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101011100011

Octal: 45343

Duodecimal: B117

Hexadecimal: 4ae3

Square: 367527241

Square Root: 138.4593803250614

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

a(n) = 3ⁿ - 2ⁿ. A1047

Triangle read by rows: 2-Stirling numbers of the second kind. A143494

p-INVERT of (1,0,1,0,0,0,0,...), where p(S) = 1 - S - S². A291728

Triangle T(n,k) (0 <= k <= n) giving number of chains of length k in partially ordered set formed from subsets of n-set by inclusion. A38719

T(n,k)=Number of second differences of arrays of length n+2 of numbers in 0..k. A228218

T(n,k)=Number of third differences of arrays of length n+3 of numbers in 0..k. A228260

Triangle read by rows: T(n,k) = number of distinct lines through the origin in the n-dimensional cubic lattice of side length k with one corner at the origin. A90030

Matrix defined by a(n,k) = 3ⁿ*Fibonacci(k) - 2ⁿ*Fibonacci(k-2), read by antidiagonals. A90888

a(n) is the concatenation of n and 9n. A9474

Nexus numbers (n+1)⁹-n⁹. A22525