5213791991 has 2 divisors, whose sum is σ = 5213791992. Its totient is φ = 5213791990.

The previous prime is 5213791969. The next prime is 5213792021. The reversal of 5213791991 is 1991973125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5213791991 - 2⁶ = 5213791927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5219791991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2606895995 + 2606895996.

It is an arithmetic number, because the mean of its divisors is an integer number (2606895996).

Almost surely, 2^5213791991 is an apocalyptic number.

5213791991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5213791991 is an equidigital number, since it uses as much as digits as its factorization.

5213791991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 47.

The square root of 5213791991 is about 72206.5924344862. The cubic root of 5213791991 is about 1734.0085459346.

The spelling of 5213791991 in words is "five billion, two hundred thirteen million, seven hundred ninety-one thousand, nine hundred ninety-one".