2193715872 has 60 divisors (see below), whose sum is σ = 6451665066. Its totient is φ = 731237760.

The previous prime is 2193715747. The next prime is 2193715879. The reversal of 2193715872 is 2785173912.

It can be written as a sum of positive squares in only one way, i.e., 2193610896 + 104976 = 46836^2 + 324^2 .

It is not an unprimeable number, because it can be changed into a prime (2193715879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 420579 + ... + 425762.

Almost surely, 2^2193715872 is an apocalyptic number.

It is an amenable number.

2193715872 is an abundant number, since it is smaller than the sum of its proper divisors (4257949194).

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

2193715872 is an equidigital number, since it uses as much as digits as its factorization.

2193715872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846363 (or 846346 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 2193715872 is about 46837.1206629955. The cubic root of 2193715872 is about 1299.3519199688.

The spelling of 2193715872 in words is "two billion, one hundred ninety-three million, seven hundred fifteen thousand, eight hundred seventy-two".