38 may refer to:
*
38 (number)
38 (thirty-eight) is the natural number following 37 and preceding 39.
In mathematics
*38! − 1 yields which is the 16th factorial prime.
*There is no answer to the equation φ(''x'') = 38, making 38 a nontotient.
*38 is the sum of the squar ...
, the natural number following 37 and preceding 39
*one of the years
38 BC
__NOTOC__
Year 38 BC was either a common year starting on Sunday or Monday or a leap year starting on Saturday, Sunday or Monday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further in ...
,
AD 38,
1938
Events
January
* January 1
** The Constitution of Estonia#Third Constitution (de facto 1938–1940, de jure 1938–1992), new constitution of Estonia enters into force, which many consider to be the ending of the Era of Silence and the a ...
,
2038
The 2030s (pronounced "twenty-thirties"; shortened to the '30s) is the next decade in the Gregorian calendar that will begin on 1 January 2030, and will end on 31 December 2039.
Plans and goals
* NASA plans to execute a crewed mission to Mars be ...
*
.38
.38 caliber is a frequently used name for the caliber of firearm
A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries (see Legal definitions).
Th ...
, a caliber of firearms and cartridges
**.38 Special, a revolver cartridge
*''Thirty-Eight: The Hurricane That Transformed New England'', a 2016 book by Stephen Long
*"Thirty Eight", a song by Karma to Burn from the album ''Almost Heathen'', 2001
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