18573 has 8 divisors (see below), whose sum is σ = 25536. Its totient is φ = 12000.

The previous prime is 18553. The next prime is 18583. The reversal of 18573 is 37581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18573 - 2⁵ = 18541 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48 + ... + 198.

It is an arithmetic number, because the mean of its divisors is an integer number (3192).

2¹⁸⁵⁷³ is an apocalyptic number.

It is an amenable number.

18573 is a deficient number, since it is larger than the sum of its proper divisors (6963).

18573 is a wasteful number, since it uses less digits than its factorization.

18573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195.

The product of its digits is 840, while the sum is 24.

The square root of 18573 is about 136.2827942185. The cubic root of 18573 is about 26.4826039857.

The spelling of 18573 in words is "eighteen thousand, five hundred seventy-three".