138751164 has 48 divisors (see below), whose sum is σ = 371338240. Its totient is φ = 44757360.

The previous prime is 138751163. The next prime is 138751241. The reversal of 138751164 is 461157831.

138751164 is a `hidden beast` number, since 1 + 3 + 87 + 511 + 64 = 666.

It is a super-2 number, since 2×138751164² = 38503771022709792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138751163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17374 + ... + 24069.

Almost surely, 2^138751164 is an apocalyptic number.

It is an amenable number.

138751164 is an abundant number, since it is smaller than the sum of its proper divisors (232587076).

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

138751164 is a wasteful number, since it uses less digits than its factorization.

138751164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41487 (or 41479 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 138751164 is about 11779.2683983344. The cubic root of 138751164 is about 517.7008504129.

The spelling of 138751164 in words is "one hundred thirty-eight million, seven hundred fifty-one thousand, one hundred sixty-four".