138576188 has 12 divisors (see below), whose sum is σ = 242632320. Its totient is φ = 69252672.

The previous prime is 138576131. The next prime is 138576203. The reversal of 138576188 is 881675831.

It is a happy number.

138576188 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138576188² = 38406719761222688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220 + ... + 16692.

It is an arithmetic number, because the mean of its divisors is an integer number (20219360).

Almost surely, 2^138576188 is an apocalyptic number.

It is an amenable number.

138576188 is a deficient number, since it is larger than the sum of its proper divisors (104056132).

138576188 is a wasteful number, since it uses less digits than its factorization.

138576188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17716 (or 17714 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The square root of 138576188 is about 11771.8387688585. The cubic root of 138576188 is about 517.4831385359.

The spelling of 138576188 in words is "one hundred thirty-eight million, five hundred seventy-six thousand, one hundred eighty-eight".