138747635 has 8 divisors (see below), whose sum is σ = 179304720. Its totient is φ = 102459744.

The previous prime is 138747617. The next prime is 138747641. The reversal of 138747635 is 536747831.

138747635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138747635 - 2⁸ = 138747379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067225 + ... + 1067354.

It is an arithmetic number, because the mean of its divisors is an integer number (22413090).

Almost surely, 2^138747635 is an apocalyptic number.

138747635 is a deficient number, since it is larger than the sum of its proper divisors (40557085).

138747635 is a wasteful number, since it uses less digits than its factorization.

138747635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134597.

The product of its digits is 423360, while the sum is 44.

The square root of 138747635 is about 11779.1186003028. The cubic root of 138747635 is about 517.6964613043.

The spelling of 138747635 in words is "one hundred thirty-eight million, seven hundred forty-seven thousand, six hundred thirty-five".