18484 has 6 divisors (see below), whose sum is σ = 32354. Its totient is φ = 9240.

The previous prime is 18481. The next prime is 18493. The reversal of 18484 is 48481.

It can be written as a sum of positive squares in only one way, i.e., 14884 + 3600 = 122^2 + 60^2 .

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 (18481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2307 + ... + 2314.

2¹⁸⁴⁸⁴ is an apocalyptic number.

It is an amenable number.

18484 is a deficient number, since it is larger than the sum of its proper divisors (13870).

18484 is a wasteful number, since it uses less digits than its factorization.

18484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625 (or 4623 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

The square root of 18484 is about 135.9558751949. The cubic root of 18484 is about 26.4402355554.

The spelling of 18484 in words is "eighteen thousand, four hundred eighty-four".