2791557916 has 12 divisors (see below), whose sum is σ = 5583115888. Its totient is φ = 1196381952.

The previous prime is 2791557911. The next prime is 2791557943. The reversal of 2791557916 is 6197551972.

2791557916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2791557916 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2791557911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49849221 + ... + 49849276.

Almost surely, 2^2791557916 is an apocalyptic number.

It is an amenable number.

2791557916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2791557916 is a wasteful number, since it uses less digits than its factorization.

2791557916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99698508 (or 99698506 counting only the distinct ones).

The product of its digits is 1190700, while the sum is 52.

The square root of 2791557916 is about 52835.1958073404. The cubic root of 2791557916 is about 1408.0417992659.

The spelling of 2791557916 in words is "two billion, seven hundred ninety-one million, five hundred fifty-seven thousand, nine hundred sixteen".