138386036 has 6 divisors (see below), whose sum is σ = 242175570. Its totient is φ = 69193016.

The previous prime is 138385991. The next prime is 138386051. The reversal of 138386036 is 630683831.

It can be written as a sum of positive squares in only one way, i.e., 85008400 + 53377636 = 9220^2 + 7306^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17298251 + ... + 17298258.

It is an arithmetic number, because the mean of its divisors is an integer number (40362595).

Almost surely, 2^138386036 is an apocalyptic number.

It is an amenable number.

138386036 is a deficient number, since it is larger than the sum of its proper divisors (103789534).

138386036 is a wasteful number, since it uses less digits than its factorization.

138386036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34596513 (or 34596511 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 138386036 is about 11763.7594331064. The cubic root of 138386036 is about 517.2463361979.

The spelling of 138386036 in words is "one hundred thirty-eight million, three hundred eighty-six thousand, thirty-six".