2137872385 has 16 divisors (see below), whose sum is σ = 2799582912. Its totient is φ = 1554308800.

The previous prime is 2137872367. The next prime is 2137872391. The reversal of 2137872385 is 5832787312.

It is not a de Polignac number, because 2137872385 - 2²¹ = 2135775233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280647 + ... + 288163.

It is an arithmetic number, because the mean of its divisors is an integer number (174973932).

Almost surely, 2^2137872385 is an apocalyptic number.

It is an amenable number.

2137872385 is a deficient number, since it is larger than the sum of its proper divisors (661710527).

2137872385 is a wasteful number, since it uses less digits than its factorization.

2137872385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12704.

The product of its digits is 564480, while the sum is 46.

The square root of 2137872385 is about 46237.1321018075. The cubic root of 2137872385 is about 1288.2315340052.

The spelling of 2137872385 in words is "two billion, one hundred thirty-seven million, eight hundred seventy-two thousand, three hundred eighty-five".