138696613 has 12 divisors (see below), whose sum is σ = 152956384. Its totient is φ = 125670600.

The previous prime is 138696611. The next prime is 138696619. The reversal of 138696613 is 316696831.

It is not a de Polignac number, because 138696613 - 2¹ = 138696611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138696613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138696611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38320 + ... + 41782.

Almost surely, 2^138696613 is an apocalyptic number.

It is an amenable number.

138696613 is a deficient number, since it is larger than the sum of its proper divisors (14259771).

138696613 is a wasteful number, since it uses less digits than its factorization.

138696613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816 (or 3805 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 138696613 is about 11776.9526194173. The cubic root of 138696613 is about 517.6329956045.

The spelling of 138696613 in words is "one hundred thirty-eight million, six hundred ninety-six thousand, six hundred thirteen".