8518 has 4 divisors (see below), whose sum is σ = 12780. Its totient is φ = 4258.

The previous prime is 8513. The next prime is 8521. The reversal of 8518 is 8158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8158 = 2 ⋅4079.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 7 and base 15.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8513) 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, 2128 + ... + 2131.

It is an arithmetic number, because the mean of its divisors is an integer number (3195).

2⁸⁵¹⁸ is an apocalyptic number.

8518 is a deficient number, since it is larger than the sum of its proper divisors (4262).

8518 is a wasteful number, since it uses less digits than its factorization.

8518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261.

The product of its digits is 320, while the sum is 22.

The square root of 8518 is about 92.2930116531. The cubic root of 8518 is about 20.4226711942.

The spelling of 8518 in words is "eight thousand, five hundred eighteen".