137021913 has 12 divisors (see below), whose sum is σ = 226195008. Its totient is φ = 78298200.

The previous prime is 137021893. The next prime is 137021917. The reversal of 137021913 is 319120731.

It is not a de Polignac number, because 137021913 - 2¹² = 137017817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137021917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1087413 + ... + 1087538.

It is an arithmetic number, because the mean of its divisors is an integer number (18849584).

Almost surely, 2^137021913 is an apocalyptic number.

It is an amenable number.

137021913 is a deficient number, since it is larger than the sum of its proper divisors (89173095).

137021913 is a wasteful number, since it uses less digits than its factorization.

137021913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174964 (or 2174961 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 137021913 is about 11705.6359502592. The cubic root of 137021913 is about 515.5411573648.

The spelling of 137021913 in words is "one hundred thirty-seven million, twenty-one thousand, nine hundred thirteen".