2137957138 has 4 divisors (see below), whose sum is σ = 3206935710. Its totient is φ = 1068978568.

The previous prime is 2137957127. The next prime is 2137957147. The reversal of 2137957138 is 8317597312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1419556329 + 718400809 = 37677^2 + 26803^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534489283 + ... + 534489286.

Almost surely, 2^2137957138 is an apocalyptic number.

2137957138 is a deficient number, since it is larger than the sum of its proper divisors (1068978572).

2137957138 is a wasteful number, since it uses less digits than its factorization.

2137957138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068978571.

The product of its digits is 317520, while the sum is 46.

The square root of 2137957138 is about 46238.0485963670. The cubic root of 2137957138 is about 1288.2485571673.

The spelling of 2137957138 in words is "two billion, one hundred thirty-seven million, nine hundred fifty-seven thousand, one hundred thirty-eight".