18144318 has 16 divisors (see below), whose sum is σ = 36416016. Its totient is φ = 6026880.

The previous prime is 18144317. The next prime is 18144353. The reversal of 18144318 is 81344181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18144317) 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, 3403 + ... + 6918.

It is an arithmetic number, because the mean of its divisors is an integer number (2276001).

Almost surely, 2^18144318 is an apocalyptic number.

18144318 is an abundant number, since it is smaller than the sum of its proper divisors (18271698).

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

18144318 is a wasteful number, since it uses less digits than its factorization.

18144318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10619.

The product of its digits is 3072, while the sum is 30.

The square root of 18144318 is about 4259.6147713144. The cubic root of 18144318 is about 262.7726835332.

Adding to 18144318 its reverse (81344181), we get a palindrome (99488499).

The spelling of 18144318 in words is "eighteen million, one hundred forty-four thousand, three hundred eighteen".