2137572438 has 32 divisors (see below), whose sum is σ = 4295798496. Its totient is φ = 709091328.

The previous prime is 2137572421. The next prime is 2137572443. The reversal of 2137572438 is 8342757312.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2137572438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2068770 + ... + 2069802.

It is an arithmetic number, because the mean of its divisors is an integer number (134243703).

Almost surely, 2^2137572438 is an apocalyptic number.

2137572438 is an abundant number, since it is smaller than the sum of its proper divisors (2158226058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2137572438 is a wasteful number, since it uses less digits than its factorization.

2137572438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368.

The product of its digits is 282240, while the sum is 42.

The square root of 2137572438 is about 46233.8884153172. Note that the first 3 decimals coincide. The cubic root of 2137572438 is about 1288.1712841888.

The spelling of 2137572438 in words is "two billion, one hundred thirty-seven million, five hundred seventy-two thousand, four hundred thirty-eight".