18036318 has 16 divisors (see below), whose sum is σ = 37316880. Its totient is φ = 5804736.

The previous prime is 18036311. The next prime is 18036323. The reversal of 18036318 is 81363081.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18036311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51655 + ... + 52002.

It is an arithmetic number, because the mean of its divisors is an integer number (2332305).

Almost surely, 2^18036318 is an apocalyptic number.

18036318 is an abundant number, since it is smaller than the sum of its proper divisors (19280562).

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

18036318 is a wasteful number, since it uses less digits than its factorization.

18036318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103691.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 18036318 is about 4246.9186476786. The cubic root of 18036318 is about 262.2502804278.

Adding to 18036318 its reverse (81363081), we get a palindrome (99399399).

The spelling of 18036318 in words is "eighteen million, thirty-six thousand, three hundred eighteen".