18314727218 has 8 divisors (see below), whose sum is σ = 27681801840. Its totient is φ = 9087459940.

The previous prime is 18314727217. The next prime is 18314727239. The reversal of 18314727218 is 81272741381.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (18314727217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34951508 + ... + 34952031.

It is an arithmetic number, because the mean of its divisors is an integer number (3460225230).

Almost surely, 2^18314727218 is an apocalyptic number.

18314727218 is a deficient number, since it is larger than the sum of its proper divisors (9367074622).

18314727218 is a wasteful number, since it uses less digits than its factorization.

18314727218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69903672.

The product of its digits is 150528, while the sum is 44.

The spelling of 18314727218 in words is "eighteen billion, three hundred fourteen million, seven hundred twenty-seven thousand, two hundred eighteen".