2644313812 has 72 divisors (see below), whose sum is σ = 5536919808. Its totient is φ = 1101240000.

The previous prime is 2644313759. The next prime is 2644313911. The reversal of 2644313812 is 2183134462.

2644313812 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 23 ways as a sum of consecutive naturals, for example, 1390062 + ... + 1391962.

It is an arithmetic number, because the mean of its divisors is an integer number (76901664).

Almost surely, 2^2644313812 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 2644313812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2768459904).

2644313812 is an abundant number, since it is smaller than the sum of its proper divisors (2892605996).

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

2644313812 is a wasteful number, since it uses less digits than its factorization.

2644313812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117 (or 2108 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 2644313812 is about 51422.8919062318. The cubic root of 2644313812 is about 1382.8370208640.

The spelling of 2644313812 in words is "two billion, six hundred forty-four million, three hundred thirteen thousand, eight hundred twelve".