2999921664 has 44 divisors (see below), whose sum is σ = 7995893144. Its totient is φ = 999972864.

The previous prime is 2999921663. The next prime is 2999921689. The reversal of 2999921664 is 4661299992.

It is not an unprimeable number, because it can be changed into a prime (2999921663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485197 + ... + 491340.

Almost surely, 2^2999921664 is an apocalyptic number.

2999921664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2999921664 is an abundant number, since it is smaller than the sum of its proper divisors (4995971480).

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

2999921664 is an equidigital number, since it uses as much as digits as its factorization.

2999921664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976560 (or 976542 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 57.

The square root of 2999921664 is about 54771.5406392773. The cubic root of 2999921664 is about 1442.2370168579.

The spelling of 2999921664 in words is "two billion, nine hundred ninety-nine million, nine hundred twenty-one thousand, six hundred sixty-four".