2813565456 is a `hidden beast` number, since 2 + 8 + 135 + 65 + 456 = 666.
It is an unprimeable number.
Almost surely, 22813565456 is an apocalyptic number.
2813565456 is a gapful number since it is divisible by the number (26) 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 2813565456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4527126912).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2813565456 is a wasteful number, since it uses less digits than its factorization.
2813565456 is an odious number, because the sum of its binary digits is odd.
The square root of 2813565456 is about 53043.0528533191. The cubic root of 2813565456 is about 1411.7322665929.
The spelling of 2813565456 in words is "two billion, eight hundred thirteen million, five hundred sixty-five thousand, four hundred fifty-six".