2791813128 has 64 divisors (see below), whose sum is σ = 7758912000. Its totient is φ = 831306240.

The previous prime is 2791813111. The next prime is 2791813139. The reversal of 2791813128 is 8213181972.

It is a self number, because there is not a number n which added to its sum of digits gives 2791813128.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 134653 + ... + 153996.

It is an arithmetic number, because the mean of its divisors is an integer number (121233000).

Almost surely, 2^2791813128 is an apocalyptic number.

It is an amenable number.

2791813128 is an abundant number, since it is smaller than the sum of its proper divisors (4967098872).

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

2791813128 is a wasteful number, since it uses less digits than its factorization.

2791813128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288702 (or 288698 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 2791813128 is about 52837.6109225237. The cubic root of 2791813128 is about 1408.0847069928.

The spelling of 2791813128 in words is "two billion, seven hundred ninety-one million, eight hundred thirteen thousand, one hundred twenty-eight".