138360884 has 12 divisors (see below), whose sum is σ = 243190500. Its totient is φ = 68877888.

The previous prime is 138360857. The next prime is 138360931. The reversal of 138360884 is 488063831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 111091600 + 27269284 = 10540^2 + 5222^2 .

It is a super-2 number, since 2×138360884² = 38287468442522912, which contains 22 as substring.

It is a congruent number.

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, 74609 + ... + 76440.

It is an arithmetic number, because the mean of its divisors is an integer number (20265875).

Almost surely, 2^138360884 is an apocalyptic number.

It is an amenable number.

138360884 is a deficient number, since it is larger than the sum of its proper divisors (104829616).

138360884 is a wasteful number, since it uses less digits than its factorization.

138360884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151282 (or 151280 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 138360884 is about 11762.6903385238. The cubic root of 138360884 is about 517.2149973709.

The spelling of 138360884 in words is "one hundred thirty-eight million, three hundred sixty thousand, eight hundred eighty-four".