Adding to 1920 its reverse (291), we get a triangular number (2211 = T66).
It is a happy number.
It is a Jordan-Polya number, since it can be written as 5! ⋅ (2!)4.
It is a tau number, because it is divible by the number of its divisors (32).
It is a nialpdrome in base 2 and base 15.
It is a zygodrome in base 2.
It is a congruent number.
It is an unprimeable number.
1920 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
In principle, a polygon with 1920 sides can be constructed with ruler and compass.
1920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3060).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1920 is an equidigital number, since it uses as much as digits as its factorization.
1920 is an evil number, because the sum of its binary digits is even.
The square root of 1920 is about 43.8178046004. The cubic root of 1920 is about 12.4289300238.
The spelling of 1920 in words is "one thousand, nine hundred twenty".