2129564322 has 54 divisors (see below), whose sum is σ = 4709735667. Its totient is φ = 695431872.

The previous prime is 2129564317. The next prime is 2129564323. The reversal of 2129564322 is 2234659212.

2129564322 is a `hidden beast` number, since 2 + 1 + 2 + 9 + 5 + 643 + 2 + 2 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 349652601 + 1779911721 = 18699^2 + 42189^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=32631.

It is not an unprimeable number, because it can be changed into a prime (2129564323) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14292304 + ... + 14292452.

Almost surely, 2^2129564322 is an apocalyptic number.

2129564322 is an abundant number, since it is smaller than the sum of its proper divisors (2580171345).

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

2129564322 is an equidigital number, since it uses as much as digits as its factorization.

2129564322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 227 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2129564322 is about 46147.2027537965. The cubic root of 2129564322 is about 1286.5606199867.

The spelling of 2129564322 in words is "two billion, one hundred twenty-nine million, five hundred sixty-four thousand, three hundred twenty-two".