15316890191 has 2 divisors, whose sum is σ = 15316890192. Its totient is φ = 15316890190.

The previous prime is 15316890157. The next prime is 15316890247. The reversal of 15316890191 is 19109861351.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15316890191 - 2²² = 15312695887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15316890091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7658445095 + 7658445096.

It is an arithmetic number, because the mean of its divisors is an integer number (7658445096).

Almost surely, 2^15316890191 is an apocalyptic number.

15316890191 is a deficient number, since it is larger than the sum of its proper divisors (1).

15316890191 is an equidigital number, since it uses as much as digits as its factorization.

15316890191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 44.

The spelling of 15316890191 in words is "fifteen billion, three hundred sixteen million, eight hundred ninety thousand, one hundred ninety-one".