It is a happy number.
1818 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.
It is an alternating number because its digits alternate between odd and even.
1818 is an undulating number in base 10.
It is a Curzon number.
It is a nialpdrome in base 3.
It is a self number, because there is not a number n which added to its sum of digits gives 1818.
1818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1818 is a wasteful number, since it uses less digits than its factorization.
1818 is an evil number, because the sum of its binary digits is even.
The square root of 1818 is about 42.6380112107. The cubic root of 1818 is about 12.2048175903.
1818 divided by its sum of digits (18) gives a palindrome (101).
Adding to 1818 its reverse (8181), we get a palindrome (9999).
The spelling of 1818 in words is "one thousand, eight hundred eighteen".