845216812 has 36 divisors (see below), whose sum is σ = 1710121896. Its totient is φ = 361249920.

The previous prime is 845216753. The next prime is 845216851. The reversal of 845216812 is 218612548.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 794593 + ... + 795655.

It is an arithmetic number, because the mean of its divisors is an integer number (47503386).

Almost surely, 2^845216812 is an apocalyptic number.

It is an amenable number.

845216812 is an abundant number, since it is smaller than the sum of its proper divisors (864905084).

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

845216812 is a wasteful number, since it uses less digits than its factorization.

845216812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158 (or 1093 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 845216812 is about 29072.6127480830. The cubic root of 845216812 is about 945.4880459183.

The spelling of 845216812 in words is "eight hundred forty-five million, two hundred sixteen thousand, eight hundred twelve".