Fatto generale: 384 is the apogee (farthest distance from Earth) of the expeditions to the International Space Station in km.
Fatto matematico: 384 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 384 is the digest length of the secure hash function SHA-384 (384 is a low power of 2).
Data storica: January 18th is the day in 1884 that Dr. William Price attempts to cremate the body of his infant son, Jesus Christ Price, setting a legal precedent for cremation in the United Kingdom.