- 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
- Vince Offer, famous for his Shamwow and Slapchop commercial, says "my nuts" a total of 19 in the remixed commercial video.
- In the Basshunter song "DotA", the video game name "DotA" is pronounced 19 times.
- 19 is associated with COVID-19.
- The board of Go has 19 vertical and horizontal lines.
- Nihon Ki-in, HOW TO PLAY GO [ 1/3 ]
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