18243168 has 48 divisors (see below), whose sum is σ = 48121920. Its totient is φ = 6051456.

The previous prime is 18243161. The next prime is 18243241. The reversal of 18243168 is 86134281.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

18243168 is a modest number, since divided by 3168 gives 1824 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18243161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29163 + ... + 29781.

It is an arithmetic number, because the mean of its divisors is an integer number (1002540).

Almost surely, 2^18243168 is an apocalyptic number.

It is an amenable number.

18243168 is an abundant number, since it is smaller than the sum of its proper divisors (29878752).

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

18243168 is a wasteful number, since it uses less digits than its factorization.

18243168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 931 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 18243168 is about 4271.2021726910. The cubic root of 18243168 is about 263.2490135775.

The spelling of 18243168 in words is "eighteen million, two hundred forty-three thousand, one hundred sixty-eight".