18324518 has 8 divisors (see below), whose sum is σ = 27605448. Its totient is φ = 9122704.

The previous prime is 18324511. The next prime is 18324541. The reversal of 18324518 is 81542381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18324511) 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, 19196 + ... + 20127.

It is an arithmetic number, because the mean of its divisors is an integer number (3450681).

Almost surely, 2^18324518 is an apocalyptic number.

18324518 is a deficient number, since it is larger than the sum of its proper divisors (9280930).

18324518 is a wasteful number, since it uses less digits than its factorization.

18324518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39558.

The product of its digits is 7680, while the sum is 32.

The square root of 18324518 is about 4280.7146599604. The cubic root of 18324518 is about 263.6397270425.

Adding to 18324518 its reverse (81542381), we get a palindrome (99866899).

The spelling of 18324518 in words is "eighteen million, three hundred twenty-four thousand, five hundred eighteen".