8941565820 has 96 divisors (see below), whose sum is σ = 28919068416. Its totient is φ = 2040140800.

The previous prime is 8941565797. The next prime is 8941565833. The reversal of 8941565820 is 285651498.

It is a self number, because there is not a number n which added to its sum of digits gives 8941565820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387246 + ... + 409685.

It is an arithmetic number, because the mean of its divisors is an integer number (301240296).

Almost surely, 2^8941565820 is an apocalyptic number.

It is an amenable number.

8941565820 is an abundant number, since it is smaller than the sum of its proper divisors (19977502596).

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

8941565820 is a wasteful number, since it uses less digits than its factorization.

8941565820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796971 (or 796969 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The square root of 8941565820 is about 94559.8531090230. The cubic root of 8941565820 is about 2075.5722673780.

The spelling of 8941565820 in words is "eight billion, nine hundred forty-one million, five hundred sixty-five thousand, eight hundred twenty".