2193445872 has 40 divisors (see below), whose sum is σ = 6296003280. Its totient is φ = 731148480.

The previous prime is 2193445847. The next prime is 2193445883. The reversal of 2193445872 is 2785443912.

2193445872 is a `hidden beast` number, since 2 + 193 + 4 + 458 + 7 + 2 = 666.

2193445872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2193445872² = 9622409586787680768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2538279 + ... + 2539142.

It is an arithmetic number, because the mean of its divisors is an integer number (157400082).

Almost surely, 2^2193445872 is an apocalyptic number.

It is an amenable number.

2193445872 is an abundant number, since it is smaller than the sum of its proper divisors (4102557408).

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

2193445872 is a wasteful number, since it uses less digits than its factorization.

2193445872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077438 (or 5077426 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 2193445872 is about 46834.2382451129. The cubic root of 2193445872 is about 1299.2986102070.

The spelling of 2193445872 in words is "two billion, one hundred ninety-three million, four hundred forty-five thousand, eight hundred seventy-two".