115187194391 has 2 divisors, whose sum is σ = 115187194392. Its totient is φ = 115187194390.

The previous prime is 115187194373. The next prime is 115187194459. The reversal of 115187194391 is 193491781511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115187194391 - 2¹⁰ = 115187193367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115187194301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57593597195 + 57593597196.

It is an arithmetic number, because the mean of its divisors is an integer number (57593597196).

Almost surely, 2^115187194391 is an apocalyptic number.

115187194391 is a deficient number, since it is larger than the sum of its proper divisors (1).

115187194391 is an equidigital number, since it uses as much as digits as its factorization.

115187194391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 50.

The spelling of 115187194391 in words is "one hundred fifteen billion, one hundred eighty-seven million, one hundred ninety-four thousand, three hundred ninety-one".