38513657 has 24 divisors (see below), whose sum is σ = 48799296. Its totient is φ = 30125088.

The previous prime is 38513647. The next prime is 38513663. The reversal of 38513657 is 75631583.

It is not a de Polignac number, because 38513657 - 2⁸ = 38513401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38513657.

It is not an unprimeable number, because it can be changed into a prime (38513617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65318 + ... + 65904.

It is an arithmetic number, because the mean of its divisors is an integer number (2033304).

Almost surely, 2^38513657 is an apocalyptic number.

It is an amenable number.

38513657 is a deficient number, since it is larger than the sum of its proper divisors (10285639).

38513657 is a wasteful number, since it uses less digits than its factorization.

38513657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 710 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 38513657 is about 6205.9372378393. The cubic root of 38513657 is about 337.7055925221.

The spelling of 38513657 in words is "thirty-eight million, five hundred thirteen thousand, six hundred fifty-seven".