138184868 has 12 divisors (see below), whose sum is σ = 242457600. Its totient is φ = 68911272.

The previous prime is 138184817. The next prime is 138184877. The reversal of 138184868 is 868481831.

It is a happy 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, 43568 + ... + 46631.

It is an arithmetic number, because the mean of its divisors is an integer number (20204800).

Almost surely, 2^138184868 is an apocalyptic number.

It is an amenable number.

138184868 is a deficient number, since it is larger than the sum of its proper divisors (104272732).

138184868 is a wasteful number, since it uses less digits than its factorization.

138184868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90586 (or 90584 counting only the distinct ones).

The product of its digits is 294912, while the sum is 47.

The square root of 138184868 is about 11755.2059956430. The cubic root of 138184868 is about 516.9955790295.

The spelling of 138184868 in words is "one hundred thirty-eight million, one hundred eighty-four thousand, eight hundred sixty-eight".