138383236 has 12 divisors (see below), whose sum is σ = 243093312. Its totient is φ = 68928008.

The previous prime is 138383221. The next prime is 138383237. The reversal of 138383236 is 632383831.

138383236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 138383195 and 138383204.

It is not an unprimeable number, because it can be changed into a prime (138383237) 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, 64720 + ... + 66823.

It is an arithmetic number, because the mean of its divisors is an integer number (20257776).

Almost surely, 2^138383236 is an apocalyptic number.

It is an amenable number.

138383236 is a deficient number, since it is larger than the sum of its proper divisors (104710076).

138383236 is a wasteful number, since it uses less digits than its factorization.

138383236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131810 (or 131808 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 138383236 is about 11763.6404229303. The cubic root of 138383236 is about 517.2428476487.

The spelling of 138383236 in words is "one hundred thirty-eight million, three hundred eighty-three thousand, two hundred thirty-six".