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Properties of the Number 19139

Nineteen Thousand One Hundred Thirty-Nine

Basics

Value: 19138 → 19139 → 19140

Parity: odd

Prime: Yes

Previous Prime: 19121

Next Prime: 19141

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 19139

Divisors: 1, 19139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101011000011

Octal: 45303

Duodecimal: B0AB

Hexadecimal: 4ac3

Square: 366301321

Square Root: 138.34377470634522

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

Primes p such that the number of distinct prime divisors of all composite numbers between p and the next prime is 5. A75585
Number of inversions in all Fibonacci binary words of length n. A129707
p(n+1) is next smallest prime beginning with p(n), initial prime is 19. A48556
a(n) = T(n,n-6), array T as in A055801. A55806
Geometric mean of the digits = 3. In other words, the product of the digits is = 3k where k is the number of digits. A61427
Number of polyforms with n cells on the faces of a deltoidal icositetrahedron up to rotation and reflection. A383804
Primes p such that p's set of distinct digits is {1,3,9}. A108383
a(n) is the smallest prime divisor of (A177929(n)-1)*(A177929(n)+1). A177930
Let (p1,p2), (p3,p4) be pairs of twin primes with p1·p2=p3+p4-1; sequence gives values of p1. A47976
Numerators of b(n) = (1/16n)*(4/(8·n+1) - 2/(8·n+4) - 1/(8·n+5) - 1/(8·n+6)). A48581