2166904932 has 96 divisors (see below), whose sum is σ = 5666734080. Its totient is φ = 640442880.

The previous prime is 2166904931. The next prime is 2166904937. The reversal of 2166904932 is 2394096612.

It is not an unprimeable number, because it can be changed into a prime (2166904931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738853 + ... + 741779.

It is an arithmetic number, because the mean of its divisors is an integer number (59028480).

Almost surely, 2^2166904932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166904932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2833367040).

2166904932 is an abundant number, since it is smaller than the sum of its proper divisors (3499829148).

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

2166904932 is a wasteful number, since it uses less digits than its factorization.

2166904932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161 (or 3159 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 2166904932 is about 46550.0261224417. The cubic root of 2166904932 is about 1294.0367771097.

The spelling of 2166904932 in words is "two billion, one hundred sixty-six million, nine hundred four thousand, nine hundred thirty-two".