15190979131 has 2 divisors, whose sum is σ = 15190979132. Its totient is φ = 15190979130.

The previous prime is 15190979113. The next prime is 15190979191. The reversal of 15190979131 is 13197909151.

Together with previous prime (15190979113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15190979131 - 2¹¹ = 15190977083 is a prime.

It is a super-2 number, since 2×15190979131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15190979191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7595489565 + 7595489566.

It is an arithmetic number, because the mean of its divisors is an integer number (7595489566).

Almost surely, 2^15190979131 is an apocalyptic number.

15190979131 is a deficient number, since it is larger than the sum of its proper divisors (1).

15190979131 is an equidigital number, since it uses as much as digits as its factorization.

15190979131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76545, while the sum is 46.

The spelling of 15190979131 in words is "fifteen billion, one hundred ninety million, nine hundred seventy-nine thousand, one hundred thirty-one".