2891694913 has 2 divisors, whose sum is σ = 2891694914. Its totient is φ = 2891694912.

The previous prime is 2891694901. The next prime is 2891694997. The reversal of 2891694913 is 3194961982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2644324929 + 247369984 = 51423^2 + 15728^2 .

It is a cyclic number.

It is not a de Polignac number, because 2891694913 - 2²⁹ = 2354824001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2891694413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445847456 + 1445847457.

It is an arithmetic number, because the mean of its divisors is an integer number (1445847457).

Almost surely, 2^2891694913 is an apocalyptic number.

It is an amenable number.

2891694913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891694913 is an equidigital number, since it uses as much as digits as its factorization.

2891694913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 52.

The square root of 2891694913 is about 53774.4819872772. The cubic root of 2891694913 is about 1424.6805337818.

The spelling of 2891694913 in words is "two billion, eight hundred ninety-one million, six hundred ninety-four thousand, nine hundred thirteen".