2137915785 has 16 divisors (see below), whose sum is σ = 3428397504. Its totient is φ = 1137644352.

The previous prime is 2137915763. The next prime is 2137915789. The reversal of 2137915785 is 5875197312.

2137915785 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2137915785 - 2¹⁷ = 2137784713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2137915789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154222 + ... + 167511.

It is an arithmetic number, because the mean of its divisors is an integer number (214274844).

Almost surely, 2^2137915785 is an apocalyptic number.

It is an amenable number.

2137915785 is a deficient number, since it is larger than the sum of its proper divisors (1290481719).

2137915785 is a wasteful number, since it uses less digits than its factorization.

2137915785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322184.

The product of its digits is 529200, while the sum is 48.

The square root of 2137915785 is about 46237.6014191913. The cubic root of 2137915785 is about 1288.2402512188.

The spelling of 2137915785 in words is "two billion, one hundred thirty-seven million, nine hundred fifteen thousand, seven hundred eighty-five".