2643938912 has 24 divisors (see below), whose sum is σ = 5373168192. Its totient is φ = 1279324800.

The previous prime is 2643938887. The next prime is 2643938917. The reversal of 2643938912 is 2198393462.

2643938912 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 not an unprimeable number, because it can be changed into a prime (2643938917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331639 + ... + 1333622.

It is an arithmetic number, because the mean of its divisors is an integer number (223882008).

Almost surely, 2^2643938912 is an apocalyptic number.

It is an amenable number.

2643938912 is an abundant number, since it is smaller than the sum of its proper divisors (2729229280).

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

2643938912 is a wasteful number, since it uses less digits than its factorization.

2643938912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665302 (or 2665294 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The square root of 2643938912 is about 51419.2465133436. The cubic root of 2643938912 is about 1382.7716667825.

The spelling of 2643938912 in words is "two billion, six hundred forty-three million, nine hundred thirty-eight thousand, nine hundred twelve".