18183 has 16 divisors (see below), whose sum is σ = 28800. Its totient is φ = 10080.

The previous prime is 18181. The next prime is 18191. The reversal of 18183 is 38181.

It is a happy number.

It is not a de Polignac number, because 18183 - 2¹ = 18181 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 14.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613 + ... + 641.

It is an arithmetic number, because the mean of its divisors is an integer number (1800).

2¹⁸¹⁸³ is an apocalyptic number.

18183 is a deficient number, since it is larger than the sum of its proper divisors (10617).

18183 is a wasteful number, since it uses less digits than its factorization.

18183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62.

The product of its digits is 192, while the sum is 21.

The square root of 18183 is about 134.8443547205. The cubic root of 18183 is about 26.2959286637.

The spelling of 18183 in words is "eighteen thousand, one hundred eighty-three".