138615102 has 12 divisors (see below), whose sum is σ = 300332760. Its totient is φ = 46205028.

The previous prime is 138615023. The next prime is 138615121. The reversal of 138615102 is 201516831.

138615102 is a `hidden beast` number, since 1 + 38 + 615 + 10 + 2 = 666.

It is a congruent number.

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, 3850402 + ... + 3850437.

It is an arithmetic number, because the mean of its divisors is an integer number (25027730).

Almost surely, 2^138615102 is an apocalyptic number.

138615102 is an abundant number, since it is smaller than the sum of its proper divisors (161717658).

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

138615102 is a wasteful number, since it uses less digits than its factorization.

138615102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7700847 (or 7700844 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 138615102 is about 11773.4914957289. The cubic root of 138615102 is about 517.5315726729.

The spelling of 138615102 in words is "one hundred thirty-eight million, six hundred fifteen thousand, one hundred two".