138718144 has 14 divisors (see below), whose sum is σ = 275268944. Its totient is φ = 69359040.

The previous prime is 138718123. The next prime is 138718199. The reversal of 138718144 is 441817831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083672 + ... + 1083799.

Almost surely, 2^138718144 is an apocalyptic number.

It is an amenable number.

138718144 is a deficient number, since it is larger than the sum of its proper divisors (136550800).

138718144 is an equidigital number, since it uses as much as digits as its factorization.

138718144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167483 (or 2167473 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 138718144 is about 11777.8666998740. The cubic root of 138718144 is about 517.6597796744.

The spelling of 138718144 in words is "one hundred thirty-eight million, seven hundred eighteen thousand, one hundred forty-four".