It is a happy number.
It is an alternating number because its digits alternate between odd and even.
It is a Curzon number.
It is a nialpdrome in base 14.
It is a practical number, because each smaller number is the sum of distinct divisors of 1218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1440).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1218 is a wasteful number, since it uses less digits than its factorization.
1218 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 41.
The square root of 1218 is about 34.8998567332. The cubic root of 1218 is about 10.6794551476.
Adding to 1218 its reverse (8121), we get a palindrome (9339).
Subtracting 1218 from its reverse (8121), we obtain a triangular number (6903 = T117).
The spelling of 1218 in words is "one thousand, two hundred eighteen".