4091784860 has 96 divisors (see below), whose sum is σ = 9200314368. Its totient is φ = 1525789440.

The previous prime is 4091784857. The next prime is 4091784877. The reversal of 4091784860 is 684871904.

It is a congruent number.

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, 2453747 + ... + 2455413.

It is an arithmetic number, because the mean of its divisors is an integer number (95836608).

Almost surely, 2^4091784860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4091784860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4600157184).

4091784860 is an abundant number, since it is smaller than the sum of its proper divisors (5108529508).

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

4091784860 is a wasteful number, since it uses less digits than its factorization.

4091784860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 4091784860 is about 63967.0607422289. The cubic root of 4091784860 is about 1599.4509652679.

The spelling of 4091784860 in words is "four billion, ninety-one million, seven hundred eighty-four thousand, eight hundred sixty".