8421800922 has 24 divisors (see below), whose sum is σ = 18248929140. Its totient is φ = 2807006400.

The previous prime is 8421800909. The next prime is 8421800927. The reversal of 8421800922 is 2290081248.

It can be written as a sum of positive squares in 2 ways, for example, as 4755619521 + 3666181401 = 68961^2 + 60549^2 .

It is not an unprimeable number, because it can be changed into a prime (8421800927) 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, 344604 + ... + 368232.

Almost surely, 2^8421800922 is an apocalyptic number.

8421800922 is an abundant number, since it is smaller than the sum of its proper divisors (9827128218).

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

8421800922 is a wasteful number, since it uses less digits than its factorization.

8421800922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43438 (or 43435 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 8421800922 is about 91770.3706105625. The cubic root of 8421800922 is about 2034.5497958299.

The spelling of 8421800922 in words is "eight billion, four hundred twenty-one million, eight hundred thousand, nine hundred twenty-two".