138755336 has 8 divisors (see below), whose sum is σ = 260166270. Its totient is φ = 69377664.

The previous prime is 138755293. The next prime is 138755341. The reversal of 138755336 is 633557831.

It can be written as a sum of positive squares in only one way, i.e., 112232836 + 26522500 = 10594^2 + 5150^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 138755293 and 138755302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8672201 + ... + 8672216.

Almost surely, 2^138755336 is an apocalyptic number.

It is an amenable number.

138755336 is a deficient number, since it is larger than the sum of its proper divisors (121410934).

138755336 is a wasteful number, since it uses less digits than its factorization.

138755336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17344423 (or 17344419 counting only the distinct ones).

The product of its digits is 226800, while the sum is 41.

The square root of 138755336 is about 11779.4454877978. The cubic root of 138755336 is about 517.7060391413.

The spelling of 138755336 in words is "one hundred thirty-eight million, seven hundred fifty-five thousand, three hundred thirty-six".