18948 has 12 divisors (see below), whose sum is σ = 44240. Its totient is φ = 6312.

The previous prime is 18947. The next prime is 18959. The reversal of 18948 is 84981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (18947) 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, 778 + ... + 801.

2¹⁸⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

18948 is an abundant number, since it is smaller than the sum of its proper divisors (25292).

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 (22120).

18948 is a wasteful number, since it uses less digits than its factorization.

18948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586 (or 1584 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 18948 is about 137.6517344606. The cubic root of 18948 is about 26.6596509322.

The spelling of 18948 in words is "eighteen thousand, nine hundred forty-eight".