137809564 has 12 divisors (see below), whose sum is σ = 241435600. Its totient is φ = 68827968.

The previous prime is 137809561. The next prime is 137809589. The reversal of 137809564 is 465908731.

137809564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 137809564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137809561) 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, 15069 + ... + 22420.

Almost surely, 2^137809564 is an apocalyptic number.

It is an amenable number.

137809564 is a deficient number, since it is larger than the sum of its proper divisors (103626036).

137809564 is a wasteful number, since it uses less digits than its factorization.

137809564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38412 (or 38410 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 137809564 is about 11739.2318317682. The cubic root of 137809564 is about 516.5271089369.

The spelling of 137809564 in words is "one hundred thirty-seven million, eight hundred nine thousand, five hundred sixty-four".