18854 has 8 divisors (see below), whose sum is σ = 30888. Its totient is φ = 8560.

The previous prime is 18839. The next prime is 18859. The reversal of 18854 is 45881.

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

It is a plaindrome in base 15.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18859) 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, 407 + ... + 450.

It is an arithmetic number, because the mean of its divisors is an integer number (3861).

2¹⁸⁸⁵⁴ is an apocalyptic number.

18854 is a deficient number, since it is larger than the sum of its proper divisors (12034).

18854 is a wasteful number, since it uses less digits than its factorization.

18854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its digits is 1280, while the sum is 26.

The square root of 18854 is about 137.3098685456. The cubic root of 18854 is about 26.6154921344.

It can be divided in two parts, 188 and 54, that added together give a palindrome (242).

The spelling of 18854 in words is "eighteen thousand, eight hundred fifty-four".