2643129884 has 12 divisors (see below), whose sum is σ = 4660787208. Its totient is φ = 1311476400.

The previous prime is 2643129871. The next prime is 2643129887. The reversal of 2643129884 is 4889213462.

It is a super-2 number, since 2×2643129884² = 13972271167387706912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643129887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2521547 + ... + 2522594.

It is an arithmetic number, because the mean of its divisors is an integer number (388398934).

Almost surely, 2^2643129884 is an apocalyptic number.

It is an amenable number.

2643129884 is a deficient number, since it is larger than the sum of its proper divisors (2017657324).

2643129884 is a wasteful number, since it uses less digits than its factorization.

2643129884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5044276 (or 5044274 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 2643129884 is about 51411.3789350179. The cubic root of 2643129884 is about 1382.6306127014.

The spelling of 2643129884 in words is "two billion, six hundred forty-three million, one hundred twenty-nine thousand, eight hundred eighty-four".