2642843944 has 32 divisors (see below), whose sum is σ = 5416175520. Its totient is φ = 1201565376.

The previous prime is 2642843939. The next prime is 2642843947. The reversal of 2642843944 is 4493482462.

It is a happy number.

It is a super-2 number, since 2×2642843944² = 13969248224674950272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2642843894 and 2642843903.

It is not an unprimeable number, because it can be changed into a prime (2642843947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182674 + ... + 196609.

It is an arithmetic number, because the mean of its divisors is an integer number (169255485).

Almost surely, 2^2642843944 is an apocalyptic number.

It is an amenable number.

2642843944 is an abundant number, since it is smaller than the sum of its proper divisors (2773331576).

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

2642843944 is a wasteful number, since it uses less digits than its factorization.

2642843944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379369 (or 379365 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 46.

The square root of 2642843944 is about 51408.5979579292. The cubic root of 2642843944 is about 1382.5807521608.

The spelling of 2642843944 in words is "two billion, six hundred forty-two million, eight hundred forty-three thousand, nine hundred forty-four".