8422565916 has 12 divisors (see below), whose sum is σ = 19652653832. Its totient is φ = 2807521968.

The previous prime is 8422565873. The next prime is 8422565927. The reversal of 8422565916 is 6195652248.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×8422565916³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350940235 + ... + 350940258.

Almost surely, 2^8422565916 is an apocalyptic number.

It is an amenable number.

8422565916 is an abundant number, since it is smaller than the sum of its proper divisors (11230087916).

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

8422565916 is a wasteful number, since it uses less digits than its factorization.

8422565916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701880500 (or 701880498 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The square root of 8422565916 is about 91774.5384951622. The cubic root of 8422565916 is about 2034.6113967185.

The spelling of 8422565916 in words is "eight billion, four hundred twenty-two million, five hundred sixty-five thousand, nine hundred sixteen".