138583356 has 12 divisors (see below), whose sum is σ = 323361192. Its totient is φ = 46194448.

The previous prime is 138583351. The next prime is 138583387. The reversal of 138583356 is 653385831.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138583351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5774295 + ... + 5774318.

It is an arithmetic number, because the mean of its divisors is an integer number (26946766).

Almost surely, 2^138583356 is an apocalyptic number.

It is an amenable number.

138583356 is an abundant number, since it is smaller than the sum of its proper divisors (184777836).

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

138583356 is a wasteful number, since it uses less digits than its factorization.

138583356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11548620 (or 11548618 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 138583356 is about 11772.1432203316. The cubic root of 138583356 is about 517.4920608365.

The spelling of 138583356 in words is "one hundred thirty-eight million, five hundred eighty-three thousand, three hundred fifty-six".