138386356 has 24 divisors (see below), whose sum is σ = 253734656. Its totient is φ = 65957760.

The previous prime is 138386351. The next prime is 138386359. The reversal of 138386356 is 653683831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138386351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21 + ... + 16636.

Almost surely, 2^138386356 is an apocalyptic number.

It is an amenable number.

138386356 is a deficient number, since it is larger than the sum of its proper divisors (115348300).

138386356 is a wasteful number, since it uses less digits than its factorization.

138386356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16759 (or 16757 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 138386356 is about 11763.7730341927. The cubic root of 138386356 is about 517.2467348863.

The spelling of 138386356 in words is "one hundred thirty-eight million, three hundred eighty-six thousand, three hundred fifty-six".