138519634 has 16 divisors (see below), whose sum is σ = 230947200. Its totient is φ = 61774960.

The previous prime is 138519629. The next prime is 138519649. The reversal of 138519634 is 436915831.

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, 58234 + ... + 60565.

It is an arithmetic number, because the mean of its divisors is an integer number (14434200).

Almost surely, 2^138519634 is an apocalyptic number.

138519634 is a deficient number, since it is larger than the sum of its proper divisors (92427566).

138519634 is a wasteful number, since it uses less digits than its factorization.

138519634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118865.

The product of its digits is 77760, while the sum is 40.

The square root of 138519634 is about 11769.4364351060. The cubic root of 138519634 is about 517.4127326845.

The spelling of 138519634 in words is "one hundred thirty-eight million, five hundred nineteen thousand, six hundred thirty-four".