2172477916 has 36 divisors (see below), whose sum is σ = 4425832488. Its totient is φ = 930369888.

The previous prime is 2172477893. The next prime is 2172477941. The reversal of 2172477916 is 6197742712.

2172477916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328555 + ... + 335101.

Almost surely, 2^2172477916 is an apocalyptic number.

It is an amenable number.

2172477916 is an abundant number, since it is smaller than the sum of its proper divisors (2253354572).

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

2172477916 is a wasteful number, since it uses less digits than its factorization.

2172477916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8258 (or 8249 counting only the distinct ones).

The product of its digits is 296352, while the sum is 46.

The square root of 2172477916 is about 46609.8478435620. The cubic root of 2172477916 is about 1295.1451894677.

The spelling of 2172477916 in words is "two billion, one hundred seventy-two million, four hundred seventy-seven thousand, nine hundred sixteen".