138629192 has 16 divisors (see below), whose sum is σ = 279924540. Its totient is φ = 63982656.

The previous prime is 138629147. The next prime is 138629201. The reversal of 138629192 is 291926831.

It can be written as a sum of positive squares in 2 ways, for example, as 138627076 + 2116 = 11774^2 + 46^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666383 + ... + 666590.

Almost surely, 2^138629192 is an apocalyptic number.

It is an amenable number.

138629192 is an abundant number, since it is smaller than the sum of its proper divisors (141295348).

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

138629192 is a wasteful number, since it uses less digits than its factorization.

138629192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332992 (or 1332988 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 138629192 is about 11774.0898586685. The cubic root of 138629192 is about 517.5491074934.

The spelling of 138629192 in words is "one hundred thirty-eight million, six hundred twenty-nine thousand, one hundred ninety-two".