813564498 has 16 divisors (see below), whose sum is σ = 1638836640. Its totient is φ = 269236896.

The previous prime is 813564491. The next prime is 813564539. The reversal of 813564498 is 894465318.

It is not an unprimeable number, because it can be changed into a prime (813564491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486915 + ... + 488582.

It is an arithmetic number, because the mean of its divisors is an integer number (102427290).

Almost surely, 2^813564498 is an apocalyptic number.

813564498 is an abundant number, since it is smaller than the sum of its proper divisors (825272142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813564498 is a wasteful number, since it uses less digits than its factorization.

813564498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975641.

The product of its digits is 829440, while the sum is 48.

The square root of 813564498 is about 28523.0520456700. The cubic root of 813564498 is about 933.5351242542.

The spelling of 813564498 in words is "eight hundred thirteen million, five hundred sixty-four thousand, four hundred ninety-eight".