2643886244 has 12 divisors (see below), whose sum is σ = 4628559600. Its totient is φ = 1321440648.

The previous prime is 2643886241. The next prime is 2643886277. The reversal of 2643886244 is 4426883462.

It is not an unprimeable number, because it can be changed into a prime (2643886241) 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, 113654 + ... + 134925.

It is an arithmetic number, because the mean of its divisors is an integer number (385713300).

Almost surely, 2^2643886244 is an apocalyptic number.

It is an amenable number.

2643886244 is a deficient number, since it is larger than the sum of its proper divisors (1984673356).

2643886244 is a wasteful number, since it uses less digits than its factorization.

2643886244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251242 (or 251240 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 47.

The square root of 2643886244 is about 51418.7343679325. The cubic root of 2643886244 is about 1382.7624849892.

The spelling of 2643886244 in words is "two billion, six hundred forty-three million, eight hundred eighty-six thousand, two hundred forty-four".