2643908988 has 24 divisors (see below), whose sum is σ = 7050424192. Its totient is φ = 755402544.

The previous prime is 2643908959. The next prime is 2643908999. The reversal of 2643908988 is 8898093462.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15737470 + ... + 15737637.

Almost surely, 2^2643908988 is an apocalyptic number.

2643908988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2643908988 is an abundant number, since it is smaller than the sum of its proper divisors (4406515204).

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

2643908988 is a wasteful number, since it uses less digits than its factorization.

2643908988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31475121 (or 31475119 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 57.

The square root of 2643908988 is about 51418.9555319826. The cubic root of 2643908988 is about 1382.7664500437.

The spelling of 2643908988 in words is "two billion, six hundred forty-three million, nine hundred eight thousand, nine hundred eighty-eight".