800996381849 has 2 divisors, whose sum is σ = 800996381850. Its totient is φ = 800996381848.

The previous prime is 800996381753. The next prime is 800996381929. The reversal of 800996381849 is 948183699008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 745385309449 + 55611072400 = 863357^2 + 235820^2 .

It is a cyclic number.

It is not a de Polignac number, because 800996381849 - 2⁸ = 800996381593 is a prime.

It is not a weakly prime, because it can be changed into another prime (800996383849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400498190924 + 400498190925.

It is an arithmetic number, because the mean of its divisors is an integer number (400498190925).

Almost surely, 2^800996381849 is an apocalyptic number.

It is an amenable number.

800996381849 is a deficient number, since it is larger than the sum of its proper divisors (1).

800996381849 is an equidigital number, since it uses as much as digits as its factorization.

800996381849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26873856, while the sum is 65.

The spelling of 800996381849 in words is "eight hundred billion, nine hundred ninety-six million, three hundred eighty-one thousand, eight hundred forty-nine".