138297718 has 16 divisors (see below), whose sum is σ = 228601296. Its totient is φ = 62344800.

The previous prime is 138297701. The next prime is 138297721. The reversal of 138297718 is 817792831.

It is a congruent number.

It is an unprimeable number.

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, 60733 + ... + 62968.

It is an arithmetic number, because the mean of its divisors is an integer number (14287581).

Almost surely, 2^138297718 is an apocalyptic number.

138297718 is a deficient number, since it is larger than the sum of its proper divisors (90303578).

138297718 is a wasteful number, since it uses less digits than its factorization.

138297718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123759.

The product of its digits is 169344, while the sum is 46.

The square root of 138297718 is about 11760.0050170057. The cubic root of 138297718 is about 517.1362772045.

The spelling of 138297718 in words is "one hundred thirty-eight million, two hundred ninety-seven thousand, seven hundred eighteen".