2155872192 has 56 divisors (see below), whose sum is σ = 5858262096. Its totient is φ = 699199488.

The previous prime is 2155872167. The next prime is 2155872193. The reversal of 2155872192 is 2912785512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155872193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144633 + ... + 158840.

Almost surely, 2^2155872192 is an apocalyptic number.

It is an amenable number.

2155872192 is an abundant number, since it is smaller than the sum of its proper divisors (3702389904).

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

2155872192 is a wasteful number, since it uses less digits than its factorization.

2155872192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303525 (or 303515 counting only the distinct ones).

The product of its digits is 100800, while the sum is 42.

The square root of 2155872192 is about 46431.3707745098. The cubic root of 2155872192 is about 1291.8368544139.

The spelling of 2155872192 in words is "two billion, one hundred fifty-five million, eight hundred seventy-two thousand, one hundred ninety-two".