2153817372 has 24 divisors (see below), whose sum is σ = 5743513216. Its totient is φ = 615376368.

The previous prime is 2153817343. The next prime is 2153817373. The reversal of 2153817372 is 2737183512.

It is a self number, because there is not a number n which added to its sum of digits gives 2153817372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153817373) 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, 12820258 + ... + 12820425.

Almost surely, 2^2153817372 is an apocalyptic number.

It is an amenable number.

2153817372 is an abundant number, since it is smaller than the sum of its proper divisors (3589695844).

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

2153817372 is a wasteful number, since it uses less digits than its factorization.

2153817372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25640697 (or 25640695 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 2153817372 is about 46409.2380027942. The cubic root of 2153817372 is about 1291.4262957518.

The spelling of 2153817372 in words is "two billion, one hundred fifty-three million, eight hundred seventeen thousand, three hundred seventy-two".