138629364 has 24 divisors (see below), whose sum is σ = 331359168. Its totient is φ = 45082560.

The previous prime is 138629347. The next prime is 138629369. The reversal of 138629364 is 463926831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138629369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140392 + ... + 141375.

It is an arithmetic number, because the mean of its divisors is an integer number (13806632).

Almost surely, 2^138629364 is an apocalyptic number.

It is an amenable number.

138629364 is an abundant number, since it is smaller than the sum of its proper divisors (192729804).

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

138629364 is a wasteful number, since it uses less digits than its factorization.

138629364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281815 (or 281813 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 138629364 is about 11774.0971628401. The cubic root of 138629364 is about 517.5493215378.

The spelling of 138629364 in words is "one hundred thirty-eight million, six hundred twenty-nine thousand, three hundred sixty-four".