915113638 has 8 divisors (see below), whose sum is σ = 1453415832. Its totient is φ = 430641696.

The previous prime is 915113623. The next prime is 915113651. The reversal of 915113638 is 836311519.

915113638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 915113597 and 915113606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13457520 + ... + 13457587.

It is an arithmetic number, because the mean of its divisors is an integer number (181676979).

Almost surely, 2^915113638 is an apocalyptic number.

915113638 is a deficient number, since it is larger than the sum of its proper divisors (538302194).

915113638 is a wasteful number, since it uses less digits than its factorization.

915113638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26915126.

The product of its digits is 19440, while the sum is 37.

The square root of 915113638 is about 30250.8452443895. The cubic root of 915113638 is about 970.8638770221.

The spelling of 915113638 in words is "nine hundred fifteen million, one hundred thirteen thousand, six hundred thirty-eight".