138601108 has 6 divisors (see below), whose sum is σ = 242551946. Its totient is φ = 69300552.

The previous prime is 138601103. The next prime is 138601117. The reversal of 138601108 is 801106831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 104284944 + 34316164 = 10212^2 + 5858^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138601103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17325135 + ... + 17325142.

Almost surely, 2^138601108 is an apocalyptic number.

It is an amenable number.

138601108 is a deficient number, since it is larger than the sum of its proper divisors (103950838).

138601108 is a wasteful number, since it uses less digits than its factorization.

138601108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34650281 (or 34650279 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 138601108 is about 11772.8971795391. The cubic root of 138601108 is about 517.5141561469.

Adding to 138601108 its reverse (801106831), we get a palindrome (939707939).

The spelling of 138601108 in words is "one hundred thirty-eight million, six hundred one thousand, one hundred eight".