138477164 has 12 divisors (see below), whose sum is σ = 276954384. Its totient is φ = 59347344.

The previous prime is 138477151. The next prime is 138477179. The reversal of 138477164 is 461774831.

138477164 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 2472779 + ... + 2472834.

It is an arithmetic number, because the mean of its divisors is an integer number (23079532).

Almost surely, 2^138477164 is an apocalyptic number.

138477164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138477164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138477164 is a wasteful number, since it uses less digits than its factorization.

138477164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945624 (or 4945622 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 138477164 is about 11767.6320472727. The cubic root of 138477164 is about 517.3598478472.

The spelling of 138477164 in words is "one hundred thirty-eight million, four hundred seventy-seven thousand, one hundred sixty-four".