809268263 has 2 divisors, whose sum is σ = 809268264. Its totient is φ = 809268262.

The previous prime is 809268253. The next prime is 809268281. The reversal of 809268263 is 362862908.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 809268263 - 2⁶ = 809268199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809268203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404634131 + 404634132.

It is an arithmetic number, because the mean of its divisors is an integer number (404634132).

Almost surely, 2^809268263 is an apocalyptic number.

809268263 is a deficient number, since it is larger than the sum of its proper divisors (1).

809268263 is an equidigital number, since it uses as much as digits as its factorization.

809268263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 809268263 is about 28447.6407281869. The cubic root of 809268263 is about 931.8889663541. Note that the first 3 decimals are identical.

The spelling of 809268263 in words is "eight hundred nine million, two hundred sixty-eight thousand, two hundred sixty-three".