8445994168 has 32 divisors (see below), whose sum is σ = 15898291200. Its totient is φ = 4206480768.

The previous prime is 8445994159. The next prime is 8445994211. The reversal of 8445994168 is 8614995448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3815430 + ... + 3817642.

It is an arithmetic number, because the mean of its divisors is an integer number (496821600).

Almost surely, 2^8445994168 is an apocalyptic number.

It is an amenable number.

8445994168 is a deficient number, since it is larger than the sum of its proper divisors (7452297032).

8445994168 is a wasteful number, since it uses less digits than its factorization.

8445994168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871 (or 3867 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 58.

The square root of 8445994168 is about 91902.0901176899. The cubic root of 8445994168 is about 2036.4961453763.

The spelling of 8445994168 in words is "eight billion, four hundred forty-five million, nine hundred ninety-four thousand, one hundred sixty-eight".