8942191664 has 40 divisors (see below), whose sum is σ = 19945131168. Its totient is φ = 3804387840.

The previous prime is 8942191627. The next prime is 8942191669. The reversal of 8942191664 is 4661912498.

It is a super-2 number, since 2×8942191664² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8942191669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276047 + ... + 306734.

Almost surely, 2^8942191664 is an apocalyptic number.

It is an amenable number.

8942191664 is an abundant number, since it is smaller than the sum of its proper divisors (11002939504).

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

8942191664 is a wasteful number, since it uses less digits than its factorization.

8942191664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582933 (or 582927 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 8942191664 is about 94563.1622990687. The cubic root of 8942191664 is about 2075.6206911914.

The spelling of 8942191664 in words is "eight billion, nine hundred forty-two million, one hundred ninety-one thousand, six hundred sixty-four".