115919013 has 64 divisors (see below), whose sum is σ = 193019904. Its totient is φ = 60480000.

The previous prime is 115918997. The next prime is 115919017. The reversal of 115919013 is 310919511.

It is not a de Polignac number, because 115919013 - 2⁴ = 115918997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115919017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1147663 + ... + 1147763.

It is an arithmetic number, because the mean of its divisors is an integer number (3015936).

Almost surely, 2^115919013 is an apocalyptic number.

It is an amenable number.

115919013 is a deficient number, since it is larger than the sum of its proper divisors (77100891).

115919013 is a wasteful number, since it uses less digits than its factorization.

115919013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 1215, while the sum is 30.

The square root of 115919013 is about 10766.5692307253. The cubic root of 115919013 is about 487.5863715472.

The spelling of 115919013 in words is "one hundred fifteen million, nine hundred nineteen thousand, thirteen".