18748 has 12 divisors (see below), whose sum is σ = 33880. Its totient is φ = 9072.

The previous prime is 18743. The next prime is 18749. The reversal of 18748 is 84781.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18743) 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 3 ways as a sum of consecutive naturals, for example, 118 + ... + 226.

2¹⁸⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

18748 is a deficient number, since it is larger than the sum of its proper divisors (15132).

18748 is a wasteful number, since it uses less digits than its factorization.

18748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 154 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 18748 is about 136.9233362141. The cubic root of 18748 is about 26.5655196106.

The spelling of 18748 in words is "eighteen thousand, seven hundred forty-eight".