Properties of the Number 19115

Nineteen Thousand One Hundred Fifteen

Basics

Value: 19114 → 19115 → 19116

Parity: odd

Prime: No

Previous Prime: 19087

Next Prime: 19121

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 3823

Divisors: 1, 5, 3823, 19115

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101010101011

Octal: 45253

Duodecimal: B08B

Hexadecimal: 4aab

Square: 365383225

Square Root: 138.25700705570043

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

Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 1 + 3·x, p(n,x) = u·p(n-1,x) + v·p(n-2,x) for n >= 3, where u = p(2,x), v = 1 - x - x². A367208

a(n) = 2·a(n-1) - (-1)ⁿ for n > 0, a(0)=2. A62092

Dispersion of A004767 (4k+3, k>=0), by antidiagonals. A191669

Trajectory of n under the Reverse and Add! operation carried out in base 3 (presumably) does not reach a palindrome and (presumably) does not join the trajectory of any term m < n. A77405

Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=5, I={0,1,3}. A79957

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 366", based on the 5-celled von Neumann neighborhood. A281421

a(n) = (14·4ⁿ + 1)/3. A206373

Number of distinct terms at a given iteration of the Collatz (or 3x+1) map starting with 0. A275544

A007318^-1 * A133648. A133649

Apply partial sum operator twice to A000594. A144249