2991341813 has 2 divisors, whose sum is σ = 2991341814. Its totient is φ = 2991341812.

The previous prime is 2991341809. The next prime is 2991341839. The reversal of 2991341813 is 3181431992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2032386724 + 958955089 = 45082^2 + 30967^2 .

It is a cyclic number.

It is not a de Polignac number, because 2991341813 - 2² = 2991341809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2991341803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495670906 + 1495670907.

It is an arithmetic number, because the mean of its divisors is an integer number (1495670907).

Almost surely, 2^2991341813 is an apocalyptic number.

It is an amenable number.

2991341813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991341813 is an equidigital number, since it uses as much as digits as its factorization.

2991341813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 41.

The square root of 2991341813 is about 54693.1605687585. The cubic root of 2991341813 is about 1440.8607593309.

The spelling of 2991341813 in words is "two billion, nine hundred ninety-one million, three hundred forty-one thousand, eight hundred thirteen".