19

19 (nineteen) is a positive integer following 18 and preceding 20. Its ordinal form is written "19th" or "ninteenth".
== Properties ==
*19 is an .
*19 is the 7th Mersenne exponent.
== In googology ==
*In Greek-based number-naming systems, 19 is associated with prefix "enneadeka-", and with prefix "novemdeci-" in Latin systems.
*Its Roman numeral (XIX) is used in Fibonaxix.
== In popular culture ==
*, famous for his Shamwow and Slapchop commercial, says "my nuts" a total of 19 in the remixed commercial video.
*In the song "DotA", the video game name "DotA" is pronounced 19 times.
*19 is associated with COVID-19.
*19 is the number for the French department of .
*The board of has 19 vertical and horizontal lines.Nihon Ki-in, HOW TO PLAY GO [ 1/3 ]
== Sources ==
Category:Numbers
Category:Class 1
Category:Numbers 0-99
Category:Prime numbers
Category:Numbers with 1 to 2 digits