819216104 has 48 divisors (see below), whose sum is σ = 1789426080. Its totient is φ = 350579040.

The previous prime is 819216089. The next prime is 819216107. The reversal of 819216104 is 401612918.

819216104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×819216104² = 1342230050105877632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (819216107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 403139 + ... + 405165.

It is an arithmetic number, because the mean of its divisors is an integer number (37279710).

Almost surely, 2^819216104 is an apocalyptic number.

It is an amenable number.

819216104 is an abundant number, since it is smaller than the sum of its proper divisors (970209976).

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

819216104 is a wasteful number, since it uses less digits than its factorization.

819216104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078 (or 3067 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 819216104 is about 28621.9514359172. The cubic root of 819216104 is about 935.6918074876.

The spelling of 819216104 in words is "eight hundred nineteen million, two hundred sixteen thousand, one hundred four".