800818864 has 40 divisors (see below), whose sum is σ = 1644805440. Its totient is φ = 376409088.

The previous prime is 800818819. The next prime is 800818871. The reversal of 800818864 is 468818008.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 800818864.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386022 + ... + 388090.

It is an arithmetic number, because the mean of its divisors is an integer number (41120136).

Almost surely, 2^800818864 is an apocalyptic number.

It is an amenable number.

800818864 is an abundant number, since it is smaller than the sum of its proper divisors (843986576).

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

800818864 is a wasteful number, since it uses less digits than its factorization.

800818864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517 (or 3511 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 43.

The square root of 800818864 is about 28298.7431523027. The cubic root of 800818864 is about 928.6343945490.

The spelling of 800818864 in words is "eight hundred million, eight hundred eighteen thousand, eight hundred sixty-four".