813363163 has 4 divisors (see below), whose sum is σ = 813422520. Its totient is φ = 813303808.

The previous prime is 813363143. The next prime is 813363179. The reversal of 813363163 is 361363318.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 813363163 - 2⁹ = 813362651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813363143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2523 + ... + 40411.

It is an arithmetic number, because the mean of its divisors is an integer number (203355630).

Almost surely, 2^813363163 is an apocalyptic number.

813363163 is a deficient number, since it is larger than the sum of its proper divisors (59357).

813363163 is a wasteful number, since it uses less digits than its factorization.

813363163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59356.

The product of its digits is 23328, while the sum is 34.

The square root of 813363163 is about 28519.5224889899. The cubic root of 813363163 is about 933.4581097494.

The spelling of 813363163 in words is "eight hundred thirteen million, three hundred sixty-three thousand, one hundred sixty-three".