13918218 has 16 divisors (see below), whose sum is σ = 28308960. Its totient is φ = 4560656.

The previous prime is 13918217. The next prime is 13918237. The reversal of 13918218 is 81281931.

It is not an unprimeable number, because it can be changed into a prime (13918213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19305 + ... + 20012.

It is an arithmetic number, because the mean of its divisors is an integer number (1769310).

Almost surely, 2^13918218 is an apocalyptic number.

13918218 is an abundant number, since it is smaller than the sum of its proper divisors (14390742).

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

13918218 is a wasteful number, since it uses less digits than its factorization.

13918218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39381.

The product of its digits is 3456, while the sum is 33.

The square root of 13918218 is about 3730.7128005249. The cubic root of 13918218 is about 240.5440090163.

The spelling of 13918218 in words is "thirteen million, nine hundred eighteen thousand, two hundred eighteen".