18183366 has 40 divisors (see below), whose sum is σ = 41164200. Its totient is φ = 5998752.

The previous prime is 18183301. The next prime is 18183371. The reversal of 18183366 is 66338181.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18183366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16810 + ... + 17858.

It is an arithmetic number, because the mean of its divisors is an integer number (1029105).

Almost surely, 2^18183366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18183366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20582100).

18183366 is an abundant number, since it is smaller than the sum of its proper divisors (22980834).

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

18183366 is a wasteful number, since it uses less digits than its factorization.

18183366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1161 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 18183366 is about 4264.1958210195. The cubic root of 18183366 is about 262.9610509676.

It can be divided in two parts, 1818 and 3366, that added together give a square (5184 = 72²).

The spelling of 18183366 in words is "eighteen million, one hundred eighty-three thousand, three hundred sixty-six".