2291843664 has 60 divisors (see below), whose sum is σ = 6997072992. Its totient is φ = 694497600.

The previous prime is 2291843647. The next prime is 2291843689. The reversal of 2291843664 is 4663481922.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 721852 + ... + 725019.

Almost surely, 2^2291843664 is an apocalyptic number.

2291843664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2291843664 is an abundant number, since it is smaller than the sum of its proper divisors (4705229328).

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

2291843664 is a wasteful number, since it uses less digits than its factorization.

2291843664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446896 (or 1446887 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 2291843664 is about 47873.2040289764. The cubic root of 2291843664 is about 1318.4439239233.

The spelling of 2291843664 in words is "two billion, two hundred ninety-one million, eight hundred forty-three thousand, six hundred sixty-four".