18030418 has 8 divisors (see below), whose sum is σ = 30909312. Its totient is φ = 7727316.

The previous prime is 18030401. The next prime is 18030427. The reversal of 18030418 is 81403081.

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

It is a junction number, because it is equal to n+sod(n) for n = 18030392 and 18030401.

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, 643930 + ... + 643957.

It is an arithmetic number, because the mean of its divisors is an integer number (3863664).

Almost surely, 2^18030418 is an apocalyptic number.

18030418 is a deficient number, since it is larger than the sum of its proper divisors (12878894).

18030418 is a wasteful number, since it uses less digits than its factorization.

18030418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287896.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 18030418 is about 4246.2239695993. The cubic root of 18030418 is about 262.2216817341.

Adding to 18030418 its reverse (81403081), we get a palindrome (99433499).

The spelling of 18030418 in words is "eighteen million, thirty thousand, four hundred eighteen".