2891960791 has 2 divisors, whose sum is σ = 2891960792. Its totient is φ = 2891960790.

The previous prime is 2891960777. The next prime is 2891960803. The reversal of 2891960791 is 1970691982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2891960791 - 2²⁷ = 2757743063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2891961791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445980395 + 1445980396.

It is an arithmetic number, because the mean of its divisors is an integer number (1445980396).

Almost surely, 2^2891960791 is an apocalyptic number.

2891960791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891960791 is an equidigital number, since it uses as much as digits as its factorization.

2891960791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 52.

The square root of 2891960791 is about 53776.9540881594. The cubic root of 2891960791 is about 1424.7241967100.

The spelling of 2891960791 in words is "two billion, eight hundred ninety-one million, nine hundred sixty thousand, seven hundred ninety-one".