38157664 has 12 divisors (see below), whose sum is σ = 75122964. Its totient is φ = 19078816.

The previous prime is 38157661. The next prime is 38157697. The reversal of 38157664 is 46675183.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38157661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 596182 + ... + 596245.

It is an arithmetic number, because the mean of its divisors is an integer number (6260247).

Almost surely, 2^38157664 is an apocalyptic number.

It is an amenable number.

38157664 is a deficient number, since it is larger than the sum of its proper divisors (36965300).

38157664 is a wasteful number, since it uses less digits than its factorization.

38157664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192437 (or 1192429 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 38157664 is about 6177.1890047173. The cubic root of 38157664 is about 336.6618661974.

The spelling of 38157664 in words is "thirty-eight million, one hundred fifty-seven thousand, six hundred sixty-four".