18945168 has 80 divisors (see below), whose sum is σ = 54478656. Its totient is φ = 5624320.

The previous prime is 18945161. The next prime is 18945217. The reversal of 18945168 is 86154981.

It is not an unprimeable number, because it can be changed into a prime (18945161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27646 + ... + 28322.

Almost surely, 2^18945168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18945168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27239328).

18945168 is an abundant number, since it is smaller than the sum of its proper divisors (35533488).

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

18945168 is a wasteful number, since it uses less digits than its factorization.

18945168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 746 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 18945168 is about 4352.6047373958. The cubic root of 18945168 is about 266.5832266721.

The spelling of 18945168 in words is "eighteen million, nine hundred forty-five thousand, one hundred sixty-eight".