18 – 3 of its divisors also add up to 18! (3+6+9)
18- (besides 0) is the only number that equals twice the sum of its decimal digits(2*(1+8))
18-Ben shmoneh esrai le’chupah (belongs in the above category)
Menu
18 – 3 of its divisors also add up to 18! (3+6+9)
18- (besides 0) is the only number that equals twice the sum of its decimal digits(2*(1+8))
18-Ben shmoneh esrai le’chupah (belongs in the above category)