18488 has 8 divisors (see below), whose sum is σ = 34680. Its totient is φ = 9240.

The previous prime is 18481. The next prime is 18493. The reversal of 18488 is 88481.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×18488² = 683612288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 18488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1148 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (4335).

2¹⁸⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

18488 is a deficient number, since it is larger than the sum of its proper divisors (16192).

18488 is a wasteful number, since it uses less digits than its factorization.

18488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317 (or 2313 counting only the distinct ones).

The product of its digits is 2048, while the sum is 29.

The square root of 18488 is about 135.9705850543. The cubic root of 18488 is about 26.4421426699.

It can be divided in two parts, 184 and 88, that added together give a palindrome (272).

The spelling of 18488 in words is "eighteen thousand, four hundred eighty-eight".