Eighteen is a composite number, its proper divisors being 1, 2, 3, 6 and 9.
18 is the age limit for being allowed a driver's license in many parts of the world.
... income for a household in the village is $48,125, and the median income for a family is $49,375. Males have a median income of $41,719 versus $28,750 for females. The per ...