138574516 has 6 divisors (see below), whose sum is σ = 242505410. Its totient is φ = 69287256.

The previous prime is 138574507. The next prime is 138574519. The reversal of 138574516 is 615475831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 138532900 + 41616 = 11770^2 + 204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138574519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17321811 + ... + 17321818.

Almost surely, 2^138574516 is an apocalyptic number.

It is an amenable number.

138574516 is a deficient number, since it is larger than the sum of its proper divisors (103930894).

138574516 is a wasteful number, since it uses less digits than its factorization.

138574516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34643633 (or 34643631 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 138574516 is about 11771.7677517015. The cubic root of 138574516 is about 517.4810572854.

The spelling of 138574516 in words is "one hundred thirty-eight million, five hundred seventy-four thousand, five hundred sixteen".