17968818 has 32 divisors (see below), whose sum is σ = 41325696. Its totient is φ = 5102208.

The previous prime is 17968817. The next prime is 17968823. The reversal of 17968818 is 81886971.

It is not an unprimeable number, because it can be changed into a prime (17968817) 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 15 ways as a sum of consecutive naturals, for example, 6030 + ... + 8502.

It is an arithmetic number, because the mean of its divisors is an integer number (1291428).

Almost surely, 2^17968818 is an apocalyptic number.

17968818 is an abundant number, since it is smaller than the sum of its proper divisors (23356878).

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

17968818 is a wasteful number, since it uses less digits than its factorization.

17968818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658.

The product of its digits is 193536, while the sum is 48.

The square root of 17968818 is about 4238.9642602881. The cubic root of 17968818 is about 261.9227186943.

The spelling of 17968818 in words is "seventeen million, nine hundred sixty-eight thousand, eight hundred eighteen".