1090841920 has 168 divisors, whose sum is σ = 3066266664. Its totient is φ = 368492544.

The previous prime is 1090841911. The next prime is 1090841933. The reversal of 1090841920 is 291480901.

It can be written as a sum of positive squares in 4 ways, for example, as 103876864 + 986965056 = 10192^2 + 31416^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1144164 + ... + 1145116.

Almost surely, 2^1090841920 is an apocalyptic number.

1090841920 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 1090841920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533133332).

1090841920 is an abundant number, since it is smaller than the sum of its proper divisors (1975424744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1090841920 is an equidigital number, since it uses as much as digits as its factorization.

1090841920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 1090841920 is about 33027.8960880042. The cubic root of 1090841920 is about 1029.4073695185.

The spelling of 1090841920 in words is "one billion, ninety million, eight hundred forty-one thousand, nine hundred twenty".