813254863 has 2 divisors, whose sum is σ = 813254864. Its totient is φ = 813254862.

The previous prime is 813254831. The next prime is 813254873. The reversal of 813254863 is 368452318.

813254863 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 is a cyclic number.

It is not a de Polignac number, because 813254863 - 2⁵ = 813254831 is a prime.

It is a super-2 number, since 2×813254863² = 1322766944386297538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813254873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406627431 + 406627432.

It is an arithmetic number, because the mean of its divisors is an integer number (406627432).

Almost surely, 2^813254863 is an apocalyptic number.

813254863 is a deficient number, since it is larger than the sum of its proper divisors (1).

813254863 is an equidigital number, since it uses as much as digits as its factorization.

813254863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 40.

The square root of 813254863 is about 28517.6237263907. The cubic root of 813254863 is about 933.4166776622.

The spelling of 813254863 in words is "eight hundred thirteen million, two hundred fifty-four thousand, eight hundred sixty-three".