18754 has 4 divisors (see below), whose sum is σ = 28134. Its totient is φ = 9376.

The previous prime is 18749. The next prime is 18757. The reversal of 18754 is 45781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45781 = 17 ⋅2693.

It can be written as a sum of positive squares in only one way, i.e., 18225 + 529 = 135^2 + 23^2 .

It is not an unprimeable number, because it can be changed into a prime (18757) 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, 4687 + ... + 4690.

2¹⁸⁷⁵⁴ is an apocalyptic number.

18754 is a deficient number, since it is larger than the sum of its proper divisors (9380).

18754 is an equidigital number, since it uses as much as digits as its factorization.

18754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9379.

The product of its digits is 1120, while the sum is 25.

The square root of 18754 is about 136.9452445323. The cubic root of 18754 is about 26.5683532660.

The spelling of 18754 in words is "eighteen thousand, seven hundred fifty-four".