2991392819 has 2 divisors, whose sum is σ = 2991392820. Its totient is φ = 2991392818.

The previous prime is 2991392783. The next prime is 2991392821. The reversal of 2991392819 is 9182931992.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2991392819 - 2⁸ = 2991392563 is a prime.

It is a super-2 number, since 2×2991392819² = 17896861995129533522, which contains 22 as substring.

Together with 2991392821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2991398819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495696409 + 1495696410.

It is an arithmetic number, because the mean of its divisors is an integer number (1495696410).

Almost surely, 2^2991392819 is an apocalyptic number.

2991392819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991392819 is an equidigital number, since it uses as much as digits as its factorization.

2991392819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 53.

The square root of 2991392819 is about 54693.6268590775. The cubic root of 2991392819 is about 1440.8689487579.

The spelling of 2991392819 in words is "two billion, nine hundred ninety-one million, three hundred ninety-two thousand, eight hundred nineteen".