38915613 has 32 divisors (see below), whose sum is σ = 63252480. Its totient is φ = 23451120.

The previous prime is 38915587. The next prime is 38915641. The reversal of 38915613 is 31651983.

It is a happy number.

38915613 is a `hidden beast` number, since 3 + 8 + 91 + 561 + 3 = 666.

38915613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38915613 - 2⁹ = 38915101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38915693) 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 31 ways as a sum of consecutive naturals, for example, 83820 + ... + 84282.

It is an arithmetic number, because the mean of its divisors is an integer number (1976640).

Almost surely, 2^38915613 is an apocalyptic number.

38915613 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

38915613 is a deficient number, since it is larger than the sum of its proper divisors (24336867).

38915613 is a wasteful number, since it uses less digits than its factorization.

38915613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 760 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 38915613 is about 6238.2379723765. The cubic root of 38915613 is about 338.8763743754.

The spelling of 38915613 in words is "thirty-eight million, nine hundred fifteen thousand, six hundred thirteen".