18054418 has 8 divisors (see below), whose sum is σ = 27168012. Its totient is φ = 8998416.

The previous prime is 18054403. The next prime is 18054437. The reversal of 18054418 is 81445081.

It can be written as a sum of positive squares in 2 ways, for example, as 16459249 + 1595169 = 4057^2 + 1263^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 18054418.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13605 + ... + 14872.

Almost surely, 2^18054418 is an apocalyptic number.

18054418 is a deficient number, since it is larger than the sum of its proper divisors (9113594).

18054418 is a wasteful number, since it uses less digits than its factorization.

18054418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28796.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 18054418 is about 4249.0490700862. The cubic root of 18054418 is about 262.3379765073.

Adding to 18054418 its reverse (81445081), we get a palindrome (99499499).

The spelling of 18054418 in words is "eighteen million, fifty-four thousand, four hundred eighteen".