810881496 has 64 divisors (see below), whose sum is σ = 2259878400. Its totient is φ = 269402400.

The previous prime is 810881473. The next prime is 810881501. The reversal of 810881496 is 694188018.

810881496 is a `hidden beast` number, since 81 + 0 + 8 + 81 + 496 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61141 + ... + 73211.

It is an arithmetic number, because the mean of its divisors is an integer number (35310600).

Almost surely, 2^810881496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810881496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129939200).

810881496 is an abundant number, since it is smaller than the sum of its proper divisors (1448996904).

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

810881496 is a wasteful number, since it uses less digits than its factorization.

810881496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12397 (or 12387 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 810881496 is about 28475.9810366561. The cubic root of 810881496 is about 932.5077789507.

The spelling of 810881496 in words is "eight hundred ten million, eight hundred eighty-one thousand, four hundred ninety-six".