219 (two hundred [and] nineteen) is the natural number following 218 and preceding 220.
In mathematics
- 219 is a happy number.
- Mertens function (219) = 4, a record high.
- There are 219 partially ordered sets on four labeled elements.
- 219 is the smallest number that can be represented as a sum of four positive cubes in two different ways.
- There are 219 different space groups, discrete and full-dimensional sets of symmetries of three-dimensional space or of crystal structures.
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