18548 has 6 divisors (see below), whose sum is σ = 32466. Its totient is φ = 9272.

The previous prime is 18541. The next prime is 18553. The reversal of 18548 is 84581.

It can be written as a sum of positive squares in only one way, i.e., 13924 + 4624 = 118^2 + 68^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2315 + ... + 2322.

It is an arithmetic number, because the mean of its divisors is an integer number (5411).

2¹⁸⁵⁴⁸ is an apocalyptic number.

It is an amenable number.

18548 is a deficient number, since it is larger than the sum of its proper divisors (13918).

18548 is a wasteful number, since it uses less digits than its factorization.

18548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641 (or 4639 counting only the distinct ones).

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

The square root of 18548 is about 136.1910422899. The cubic root of 18548 is about 26.4707164361.

The spelling of 18548 in words is "eighteen thousand, five hundred forty-eight".