138630604 has 18 divisors (see below), whose sum is σ = 282212700. Its totient is φ = 59413032.

The previous prime is 138630599. The next prime is 138630623. The reversal of 138630604 is 406036831.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 353454 + ... + 353845.

Almost surely, 2^138630604 is an apocalyptic number.

138630604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138630604 is an abundant number, since it is smaller than the sum of its proper divisors (143582096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138630604 is a wasteful number, since it uses less digits than its factorization.

138630604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707317 (or 707308 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 138630604 is about 11774.1498206877. The cubic root of 138630604 is about 517.5508646434.

The spelling of 138630604 in words is "one hundred thirty-eight million, six hundred thirty thousand, six hundred four".