12918 has 8 divisors (see below), whose sum is σ = 25848. Its totient is φ = 4304.

The previous prime is 12917. The next prime is 12919. The reversal of 12918 is 81921.

It is an interprime number because it is at equal distance from previous prime (12917) and next prime (12919).

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

12918 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12894 and 12903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071 + ... + 1082.

It is an arithmetic number, because the mean of its divisors is an integer number (3231).

2¹²⁹¹⁸ is an apocalyptic number.

12918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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 (12924).

12918 is a wasteful number, since it uses less digits than its factorization.

12918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158.

The product of its digits is 144, while the sum is 21.

The square root of 12918 is about 113.6573798748. The cubic root of 12918 is about 23.4638042451.

The spelling of 12918 in words is "twelve thousand, nine hundred eighteen".