804619818 has 80 divisors (see below), whose sum is σ = 1896846336. Its totient is φ = 254573280.

The previous prime is 804619813. The next prime is 804619853. The reversal of 804619818 is 818916408.

It is not an unprimeable number, because it can be changed into a prime (804619811) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 264655 + ... + 267677.

Almost surely, 2^804619818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 804619818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (948423168).

804619818 is an abundant number, since it is smaller than the sum of its proper divisors (1092226518).

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

804619818 is a wasteful number, since it uses less digits than its factorization.

804619818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121 (or 3112 counting only the distinct ones).

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

The square root of 804619818 is about 28365.8212995852. The cubic root of 804619818 is about 930.1012792926.

The spelling of 804619818 in words is "eight hundred four million, six hundred nineteen thousand, eight hundred eighteen".