Subtracting from 3618 its sum of digits (18), we obtain a square (3600 = 602).
Adding to 3618 its reverse (8163), we get a triangular number (11781 = T153).
It is an alternating number because its digits alternate between odd and even.
It is a Curzon number.
It is a plaindrome in base 7, base 11, base 14 and base 15.
It is a nialpdrome in base 16.
It is a zygodrome in base 3.
It is a self number, because there is not a number n which added to its sum of digits gives 3618.
It is a practical number, because each smaller number is the sum of distinct divisors of 3618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3618 is a wasteful number, since it uses less digits than its factorization.
3618 is an odious number, because the sum of its binary digits is odd.
The square root of 3618 is about 60.1498129673. The cubic root of 3618 is about 15.3516898407.
The spelling of 3618 in words is "three thousand, six hundred eighteen".