Properties of the Number 19018

Nineteen Thousand Eighteen

Basics

Value: 19017 → 19018 → 19019

Parity: even

Prime: No

Previous Prime: 19013

Next Prime: 19031

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 37 × 257

Divisors: 1, 2, 37, 74, 257, 514, 9509, 19018

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101001001010

Octal: 45112

Duodecimal: B00A

Hexadecimal: 4a4a

Square: 361684324

Square Root: 137.90576492663388

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) = (2·n - 1)*(3·n² - 3·n + 2)/2. A63491

a(n) = 14·n² - 4·n. A195023

Take first n bits of the infinite Fibonacci word A003849, regard them as a binary number, then convert it to base 10. A182028

a(n) = n² + a(n-1), with a(1)=0. A168559

One fifth of product plus sum of five consecutive nonnegative numbers. A166942

a(n) = binary code (shown here in decimal) of the position of natural number n in the beanstalk-tree A218776. A218615

a(n) = binary code (shown here in decimal) of the position of the predecessor of the natural number pair (2n,2n+1) in the compact beanstalk-tree A218780. A218791

Sequence shifts left five places under Weigh transform with a(n) = signum(n) for n<5. A316077

a(n) is the smallest number which can be represented as the sum of n distinct perfect powers (A001597) in exactly n ways, or -1 if no such number exists. A363040

Numbers k such that the total number of digits d in the numbers from 1 to k is even for each d from 0 to 9. A380642