2891185963 has 2 divisors, whose sum is σ = 2891185964. Its totient is φ = 2891185962.

The previous prime is 2891185853. The next prime is 2891185967. The reversal of 2891185963 is 3695811982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2891185963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2891185963.

It is not a weakly prime, because it can be changed into another prime (2891185967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445592981 + 1445592982.

It is an arithmetic number, because the mean of its divisors is an integer number (1445592982).

Almost surely, 2^2891185963 is an apocalyptic number.

2891185963 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891185963 is an equidigital number, since it uses as much as digits as its factorization.

2891185963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 52.

The square root of 2891185963 is about 53769.7495158756. The cubic root of 2891185963 is about 1424.5969456990.

The spelling of 2891185963 in words is "two billion, eight hundred ninety-one million, one hundred eighty-five thousand, nine hundred sixty-three".