818
820
The Number 819: Properties and Meanings
Prime Factors of 819=3x3x7x13.
819 is a 274-gonal Number.
819 is a Square Pyramidal Number.
819 Barnardiana is a minor planet orbiting the Sun.
The French-Italian 819-line television system.
The Year 819 AD
In the year 819 AD Nominoe became earl of Vannes, Brittany.
818
820