2643074644 has 48 divisors (see below), whose sum is σ = 5346432000. Its totient is φ = 1119902976.

The previous prime is 2643074611. The next prime is 2643074671. The reversal of 2643074644 is 4464703462.

It is a junction number, because it is equal to n+sod(n) for n = 2643074597 and 2643074606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 970717 + ... + 973435.

It is an arithmetic number, because the mean of its divisors is an integer number (111384000).

Almost surely, 2^2643074644 is an apocalyptic number.

It is an amenable number.

2643074644 is an abundant number, since it is smaller than the sum of its proper divisors (2703357356).

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

2643074644 is a wasteful number, since it uses less digits than its factorization.

2643074644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112 (or 3110 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 40.

The square root of 2643074644 is about 51410.8416970584. The cubic root of 2643074644 is about 1382.6209805544.

The spelling of 2643074644 in words is "two billion, six hundred forty-three million, seventy-four thousand, six hundred forty-four".