18102 has 16 divisors (see below), whose sum is σ = 41472. Its totient is φ = 5160.

The previous prime is 18097. The next prime is 18119. The reversal of 18102 is 20181.

It is a happy number.

It is a plaindrome in base 11 and base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 18102.

It is an unprimeable number.

18102 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, 174 + ... + 257.

It is an arithmetic number, because the mean of its divisors is an integer number (2592).

2¹⁸¹⁰² is an apocalyptic number.

18102 is an abundant number, since it is smaller than the sum of its proper divisors (23370).

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 (20736).

18102 is a wasteful number, since it uses less digits than its factorization.

18102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 18102 is about 134.5436732069. The cubic root of 18102 is about 26.2568236229.

Adding to 18102 its reverse (20181), we get a palindrome (38283).

It can be divided in two parts, 18 and 102, that added together give a triangular number (120 = T₁₅).

The spelling of 18102 in words is "eighteen thousand, one hundred two".