138511364 has 12 divisors (see below), whose sum is σ = 242498844. Its totient is φ = 69225984.

The previous prime is 138511343. The next prime is 138511367. The reversal of 138511364 is 463115831.

It can be written as a sum of positive squares in 2 ways, for example, as 71402500 + 67108864 = 8450^2 + 8192^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138511364.

It is not an unprimeable number, because it can be changed into a prime (138511367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5612 + ... + 17564.

It is an arithmetic number, because the mean of its divisors is an integer number (20208237).

Almost surely, 2^138511364 is an apocalyptic number.

It is an amenable number.

138511364 is a deficient number, since it is larger than the sum of its proper divisors (103987480).

138511364 is a wasteful number, since it uses less digits than its factorization.

138511364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14854 (or 14852 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 138511364 is about 11769.0850961322. The cubic root of 138511364 is about 517.4024354957.

The spelling of 138511364 in words is "one hundred thirty-eight million, five hundred eleven thousand, three hundred sixty-four".