Properties of the Number 19381

Nineteen Thousand Three Hundred Eighty-One

Basics

Value: 19380 → 19381 → 19382

Parity: odd

Prime: Yes

Previous Prime: 19379

Next Prime: 19387

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 19381

Divisors: 1, 19381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101110110101

Octal: 45665

Duodecimal: B271

Hexadecimal: 4bb5

Square: 375623161

Square Root: 139.21566003866087

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 n such that p(10n) is prime, where p(n) is the number of partitions of n. A114170

Prime(n)*...*a(n) is the least product of consecutive primes which is abundant. A7708

Primes which can be expressed as sum of distinct powers of 5. A77719

Number of labeled chains with n edges. A48174

Primes of the form x² + 5·y², where·and y=x+1 are consecutive natural numbers. A176608

Prime(n)*...*a(n) is the least product of consecutive primes which is non-deficient. A7686

Sums of 5 distinct powers of 5. A38477

Duplicate of A048174. A58350

Maximal number of 15432 patterns in a permutation of 1,2,...,n. A100355

Number of Section I primes between 2ⁿ and 2ⁿ⁺¹. See A135832. A135833