2089907784 has 128 divisors (see below), whose sum is σ = 6163516800. Its totient is φ = 653875200.

The previous prime is 2089907759. The next prime is 2089907803. The reversal of 2089907784 is 4877099802.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 2089907784.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2206399 + ... + 2207345.

It is an arithmetic number, because the mean of its divisors is an integer number (48152475).

Almost surely, 2^2089907784 is an apocalyptic number.

2089907784 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 2089907784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3081758400).

2089907784 is an abundant number, since it is smaller than the sum of its proper divisors (4073609016).

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

2089907784 is a wasteful number, since it uses less digits than its factorization.

2089907784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 2089907784 is about 45715.5092282696. The cubic root of 2089907784 is about 1278.5244601840.

The spelling of 2089907784 in words is "two billion, eighty-nine million, nine hundred seven thousand, seven hundred eighty-four".