137520188 has 12 divisors (see below), whose sum is σ = 259172760. Its totient is φ = 63470832.

The previous prime is 137520181. The next prime is 137520199. The reversal of 137520188 is 881025731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137520181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1322258 + ... + 1322361.

It is an arithmetic number, because the mean of its divisors is an integer number (21597730).

Almost surely, 2^137520188 is an apocalyptic number.

It is an amenable number.

137520188 is a deficient number, since it is larger than the sum of its proper divisors (121652572).

137520188 is a wasteful number, since it uses less digits than its factorization.

137520188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644636 (or 2644634 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 137520188 is about 11726.9001871765. The cubic root of 137520188 is about 516.1653166993.

The spelling of 137520188 in words is "one hundred thirty-seven million, five hundred twenty thousand, one hundred eighty-eight".