804815853 has 16 divisors (see below), whose sum is σ = 1136851200. Its totient is φ = 504697856.

The previous prime is 804815833. The next prime is 804815857. The reversal of 804815853 is 358518408.

It is a cyclic number.

It is not a de Polignac number, because 804815853 - 2¹² = 804811757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804815857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121573 + ... + 128021.

It is an arithmetic number, because the mean of its divisors is an integer number (71053200).

Almost surely, 2^804815853 is an apocalyptic number.

It is an amenable number.

804815853 is a deficient number, since it is larger than the sum of its proper divisors (332035347).

804815853 is a wasteful number, since it uses less digits than its factorization.

804815853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8916.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 804815853 is about 28369.2765681467. The cubic root of 804815853 is about 930.1768087930.

The spelling of 804815853 in words is "eight hundred four million, eight hundred fifteen thousand, eight hundred fifty-three".