18068168 has 8 divisors (see below), whose sum is σ = 33877830. Its totient is φ = 9034080.

The previous prime is 18068159. The next prime is 18068191. The reversal of 18068168 is 86186081.

It can be written as a sum of positive squares in only one way, i.e., 12124324 + 5943844 = 3482^2 + 2438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1129253 + ... + 1129268.

Almost surely, 2^18068168 is an apocalyptic number.

It is an amenable number.

18068168 is a deficient number, since it is larger than the sum of its proper divisors (15809662).

18068168 is a wasteful number, since it uses less digits than its factorization.

18068168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258527 (or 2258523 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 18068168 is about 4250.6667712254. Note that the first 3 decimals coincide. The cubic root of 18068168 is about 262.4045572900.

The spelling of 18068168 in words is "eighteen million, sixty-eight thousand, one hundred sixty-eight".