18894 has 16 divisors (see below), whose sum is σ = 39168. Its totient is φ = 6072.
The previous prime is 18869. The next prime is 18899. The reversal of 18894 is 49881.
It is a happy number.
18894 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
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 (18899) by changing a digit.
18894 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249 + ... + 315.
It is an arithmetic number, because the mean of its divisors is an integer number (2448).
218894 is an apocalyptic number.
18894 is an abundant number, since it is smaller than the sum of its proper divisors (20274).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19584).
18894 is a wasteful number, since it uses less digits than its factorization.
18894 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 119.
The product of its digits is 2304, while the sum is 30.
The square root of 18894 is about 137.4554473275. The cubic root of 18894 is about 26.6343010111.
It can be divided in two parts, 188 and 94, that added together give a palindrome (282).
The spelling of 18894 in words is "eighteen thousand, eight hundred ninety-four".
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