138568113 has 6 divisors (see below), whose sum is σ = 200153954. Its totient is φ = 92378736.

The previous prime is 138568099. The next prime is 138568117. The reversal of 138568113 is 311865831.

It can be written as a sum of positive squares in only one way, i.e., 82137969 + 56430144 = 9063^2 + 7512^2 .

It is not a de Polignac number, because 138568113 - 2⁵ = 138568081 is a prime.

It is a super-2 number, since 2×138568113² = 38402243880761538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138568117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7698220 + ... + 7698237.

Almost surely, 2^138568113 is an apocalyptic number.

It is an amenable number.

138568113 is a deficient number, since it is larger than the sum of its proper divisors (61585841).

138568113 is a wasteful number, since it uses less digits than its factorization.

138568113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15396463 (or 15396460 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 138568113 is about 11771.4957843088. The cubic root of 138568113 is about 517.4730868872.

The spelling of 138568113 in words is "one hundred thirty-eight million, five hundred sixty-eight thousand, one hundred thirteen".