18341218 has 8 divisors (see below), whose sum is σ = 31442112. Its totient is φ = 7860516.

The previous prime is 18341161. The next prime is 18341261. The reversal of 18341218 is 81214381.

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

It is an alternating number because its digits alternate between odd and even.

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, 655030 + ... + 655057.

It is an arithmetic number, because the mean of its divisors is an integer number (3930264).

Almost surely, 2^18341218 is an apocalyptic number.

18341218 is a deficient number, since it is larger than the sum of its proper divisors (13100894).

18341218 is a wasteful number, since it uses less digits than its factorization.

18341218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310096.

The product of its digits is 1536, while the sum is 28.

The square root of 18341218 is about 4282.6648246156. The cubic root of 18341218 is about 263.7197918429.

Adding to 18341218 its reverse (81214381), we get a palindrome (99555599).

The spelling of 18341218 in words is "eighteen million, three hundred forty-one thousand, two hundred eighteen".