809055193 has 2 divisors, whose sum is σ = 809055194. Its totient is φ = 809055192.

The previous prime is 809055179. The next prime is 809055197. The reversal of 809055193 is 391550908.

809055193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 759112704 + 49942489 = 27552^2 + 7067^2 .

It is a cyclic number.

It is not a de Polignac number, because 809055193 - 2⁵ = 809055161 is a prime.

It is not a weakly prime, because it can be changed into another prime (809055197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404527596 + 404527597.

It is an arithmetic number, because the mean of its divisors is an integer number (404527597).

Almost surely, 2^809055193 is an apocalyptic number.

It is an amenable number.

809055193 is a deficient number, since it is larger than the sum of its proper divisors (1).

809055193 is an equidigital number, since it uses as much as digits as its factorization.

809055193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 809055193 is about 28443.8955313790. The cubic root of 809055193 is about 931.8071743536.

The spelling of 809055193 in words is "eight hundred nine million, fifty-five thousand, one hundred ninety-three".