1818168 has 64 divisors (see below), whose sum is σ = 5080320. Its totient is φ = 537600.

The previous prime is 1818163. The next prime is 1818199. The reversal of 1818168 is 8618181.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818161) 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 15 ways as a sum of consecutive naturals, for example, 18696 + ... + 18792.

It is an arithmetic number, because the mean of its divisors is an integer number (79380).

2^1818168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2540160).

1818168 is an abundant number, since it is smaller than the sum of its proper divisors (3262152).

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

1818168 is a wasteful number, since it uses less digits than its factorization.

1818168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 184 counting only the distinct ones).

The product of its digits is 3072, while the sum is 33.

The square root of 1818168 is about 1348.3946009978. The cubic root of 1818168 is about 122.0519352472.

The spelling of 1818168 in words is "one million, eight hundred eighteen thousand, one hundred sixty-eight".