Eighteen

[rbandrews]

The number 1818 is a number, 18, repeated twice.

If you add together the digits, 1+8+1+8, you also get 18.

There is no other number with this property.

Comments

[desfido.livejournal.com]

You can tell I'm sick from the dumb mistakes in the bit after the colon, but you get the idea, I figure.