845818120 has 32 divisors (see below), whose sum is σ = 2174961600. Its totient is φ = 289994688.

The previous prime is 845818111. The next prime is 845818133. The reversal of 845818120 is 21818548.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 845818120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1510110 + ... + 1510669.

It is an arithmetic number, because the mean of its divisors is an integer number (67967550).

Almost surely, 2^845818120 is an apocalyptic number.

It is an amenable number.

845818120 is an abundant number, since it is smaller than the sum of its proper divisors (1329143480).

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

845818120 is a wasteful number, since it uses less digits than its factorization.

845818120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020797 (or 3020793 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 845818120 is about 29082.9523948309. The cubic root of 845818120 is about 945.7122072416.

The spelling of 845818120 in words is "eight hundred forty-five million, eight hundred eighteen thousand, one hundred twenty".