18298218 has 16 divisors (see below), whose sum is σ = 37489536. Its totient is φ = 5950560.

The previous prime is 18298213. The next prime is 18298289. The reversal of 18298218 is 81289281.

It is not an unprimeable number, because it can be changed into a prime (18298213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36946 + ... + 37437.

It is an arithmetic number, because the mean of its divisors is an integer number (2343096).

Almost surely, 2^18298218 is an apocalyptic number.

18298218 is an abundant number, since it is smaller than the sum of its proper divisors (19191318).

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

18298218 is a wasteful number, since it uses less digits than its factorization.

18298218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74429.

The product of its digits is 18432, while the sum is 39.

The square root of 18298218 is about 4277.6416399694. The cubic root of 18298218 is about 263.5135382819.

The spelling of 18298218 in words is "eighteen million, two hundred ninety-eight thousand, two hundred eighteen".