18382 has 16 divisors (see below), whose sum is σ = 34272. Its totient is φ = 7200.

The previous prime is 18379. The next prime is 18397. The reversal of 18382 is 28381.

18382 is nontrivially palindromic in base 12.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132 + ... + 232.

It is an arithmetic number, because the mean of its divisors is an integer number (2142).

2¹⁸³⁸² is an apocalyptic number.

18382 is a deficient number, since it is larger than the sum of its proper divisors (15890).

18382 is a wasteful number, since it uses less digits than its factorization.

18382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123.

The product of its digits is 384, while the sum is 22.

The square root of 18382 is about 135.5802345477. The cubic root of 18382 is about 26.3915108916.

Multiplying 18382 by its sum of digits (22), we get a palindrome (404404).

Subtracting 18382 from its reverse (28381), we obtain a palindrome (9999).

It can be divided in two parts, 18 and 382, that added together give a square (400 = 20²).

The spelling of 18382 in words is "eighteen thousand, three hundred eighty-two".