4518 has 12 divisors (see below), whose sum is σ = 9828. Its totient is φ = 1500.

The previous prime is 4517. The next prime is 4519. The reversal of 4518 is 8154.

It is an interprime number because it is at equal distance from previous prime (4517) and next prime (4519).

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 251 = 4518 / (4 + 5 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 4518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108 + ... + 143.

It is an arithmetic number, because the mean of its divisors is an integer number (819).

4518 is an abundant number, since it is smaller than the sum of its proper divisors (5310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4518 is a wasteful number, since it uses less digits than its factorization.

4518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 256 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 4518 is about 67.2160695072. The cubic root of 4518 is about 16.5316198074.

The spelling of 4518 in words is "four thousand, five hundred eighteen".