813491360 has 96 divisors (see below), whose sum is σ = 2111163264. Its totient is φ = 293760000.

The previous prime is 813491359. The next prime is 813491387. The reversal of 813491360 is 63194318.

It is a self number, because there is not a number n which added to its sum of digits gives 813491360.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264230 + ... + 267290.

It is an arithmetic number, because the mean of its divisors is an integer number (21991284).

Almost surely, 2^813491360 is an apocalyptic number.

813491360 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 813491360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1055581632).

813491360 is an abundant number, since it is smaller than the sum of its proper divisors (1297671904).

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

813491360 is a wasteful number, since it uses less digits than its factorization.

813491360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238 (or 3230 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 813491360 is about 28521.7699310544. The cubic root of 813491360 is about 933.5071490340.

The spelling of 813491360 in words is "eight hundred thirteen million, four hundred ninety-one thousand, three hundred sixty".