2797991791 has 16 divisors (see below), whose sum is σ = 3346099200. Its totient is φ = 2287568448.

The previous prime is 2797991773. The next prime is 2797991873. The reversal of 2797991791 is 1971997972.

It is a cyclic number.

It is not a de Polignac number, because 2797991791 - 2⁵ = 2797991759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2797991771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33595 + ... + 82003.

It is an arithmetic number, because the mean of its divisors is an integer number (209131200).

Almost surely, 2^2797991791 is an apocalyptic number.

2797991791 is a deficient number, since it is larger than the sum of its proper divisors (548107409).

2797991791 is a wasteful number, since it uses less digits than its factorization.

2797991791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48798.

The product of its digits is 4500846, while the sum is 61.

The square root of 2797991791 is about 52896.0470262193. The cubic root of 2797991791 is about 1409.1227027570.

The spelling of 2797991791 in words is "two billion, seven hundred ninety-seven million, nine hundred ninety-one thousand, seven hundred ninety-one".