6808391873 has 2 divisors, whose sum is σ = 6808391874. Its totient is φ = 6808391872.

The previous prime is 6808391861. The next prime is 6808391959. The reversal of 6808391873 is 3781938086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6754045489 + 54346384 = 82183^2 + 7372^2 .

It is a cyclic number.

It is not a de Polignac number, because 6808391873 - 2⁸ = 6808391617 is a prime.

It is not a weakly prime, because it can be changed into another prime (6808391803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3404195936 + 3404195937.

It is an arithmetic number, because the mean of its divisors is an integer number (3404195937).

Almost surely, 2^6808391873 is an apocalyptic number.

It is an amenable number.

6808391873 is a deficient number, since it is larger than the sum of its proper divisors (1).

6808391873 is an equidigital number, since it uses as much as digits as its factorization.

6808391873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 6808391873 is about 82512.9800273872. The cubic root of 6808391873 is about 1895.3155024980.

The spelling of 6808391873 in words is "six billion, eight hundred eight million, three hundred ninety-one thousand, eight hundred seventy-three".