138704718 has 16 divisors (see below), whose sum is σ = 278634240. Its totient is φ = 46030776.

The previous prime is 138704711. The next prime is 138704729. The reversal of 138704718 is 817407831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138704711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49558 + ... + 52281.

It is an arithmetic number, because the mean of its divisors is an integer number (17414640).

Almost surely, 2^138704718 is an apocalyptic number.

138704718 is an abundant number, since it is smaller than the sum of its proper divisors (139929522).

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

138704718 is a wasteful number, since it uses less digits than its factorization.

138704718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102071.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 138704718 is about 11777.2967186872. The cubic root of 138704718 is about 517.6430783638.

The spelling of 138704718 in words is "one hundred thirty-eight million, seven hundred four thousand, seven hundred eighteen".