2198591872 has 32 divisors (see below), whose sum is σ = 4486847400. Its totient is φ = 1072481280.

The previous prime is 2198591867. The next prime is 2198591891. The reversal of 2198591872 is 2781958912.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204222 + ... + 214717.

Almost surely, 2^2198591872 is an apocalyptic number.

It is an amenable number.

2198591872 is an abundant number, since it is smaller than the sum of its proper divisors (2288255528).

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

2198591872 is an equidigital number, since it uses as much as digits as its factorization.

2198591872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418994 (or 418982 counting only the distinct ones).

The product of its digits is 725760, while the sum is 52.

The square root of 2198591872 is about 46889.1445006198. The cubic root of 2198591872 is about 1300.3139028959.

The spelling of 2198591872 in words is "two billion, one hundred ninety-eight million, five hundred ninety-one thousand, eight hundred seventy-two".