137918013 has 4 divisors (see below), whose sum is σ = 183890688. Its totient is φ = 91945340.

The previous prime is 137918003. The next prime is 137918021. The reversal of 137918013 is 310819731.

137918013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310819731 = 3 ⋅103606577.

It is a cyclic number.

It is not a de Polignac number, because 137918013 - 2¹⁷ = 137786941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137918003) 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, 22986333 + ... + 22986338.

It is an arithmetic number, because the mean of its divisors is an integer number (45972672).

Almost surely, 2^137918013 is an apocalyptic number.

It is an amenable number.

137918013 is a deficient number, since it is larger than the sum of its proper divisors (45972675).

137918013 is an equidigital number, since it uses as much as digits as its factorization.

137918013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45972674.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 137918013 is about 11743.8500075571. The cubic root of 137918013 is about 516.6625667844.

The spelling of 137918013 in words is "one hundred thirty-seven million, nine hundred eighteen thousand, thirteen".