138396604 has 6 divisors (see below), whose sum is σ = 242194064. Its totient is φ = 69198300.

The previous prime is 138396581. The next prime is 138396611. The reversal of 138396604 is 406693831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17299572 + ... + 17299579.

Almost surely, 2^138396604 is an apocalyptic number.

It is an amenable number.

138396604 is a deficient number, since it is larger than the sum of its proper divisors (103797460).

138396604 is a wasteful number, since it uses less digits than its factorization.

138396604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34599155 (or 34599153 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 138396604 is about 11764.2086006667. The cubic root of 138396604 is about 517.2595025556.

The spelling of 138396604 in words is "one hundred thirty-eight million, three hundred ninety-six thousand, six hundred four".