2091230784 has 168 divisors, whose sum is σ = 6350617728. Its totient is φ = 682007040.

The previous prime is 2091230783. The next prime is 2091230797. The reversal of 2091230784 is 4870321902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2091230783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 729514 + ... + 732374.

It is an arithmetic number, because the mean of its divisors is an integer number (37801296).

Almost surely, 2^2091230784 is an apocalyptic number.

2091230784 is a gapful number since it is divisible by the number (24) 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 2091230784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3175308864).

2091230784 is an abundant number, since it is smaller than the sum of its proper divisors (4259386944).

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

2091230784 is an equidigital number, since it uses as much as digits as its factorization.

2091230784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935 (or 2913 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2091230784 is about 45729.9768641971. The cubic root of 2091230784 is about 1278.7941899573.

The spelling of 2091230784 in words is "two billion, ninety-one million, two hundred thirty thousand, seven hundred eighty-four".