18682 has 4 divisors (see below), whose sum is σ = 28026. Its totient is φ = 9340.

The previous prime is 18679. The next prime is 18691. The reversal of 18682 is 28681.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17161 + 1521 = 131^2 + 39^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4669 + ... + 4672.

2¹⁸⁶⁸² is an apocalyptic number.

18682 is a deficient number, since it is larger than the sum of its proper divisors (9344).

18682 is an equidigital number, since it uses as much as digits as its factorization.

18682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343.

The product of its digits is 768, while the sum is 25.

The square root of 18682 is about 136.6821129483. The cubic root of 18682 is about 26.5343094232.

Subtracting 18682 from its reverse (28681), we obtain a palindrome (9999).

The spelling of 18682 in words is "eighteen thousand, six hundred eighty-two".