491785344 has 192 divisors, whose sum is σ = 1491803040. Its totient is φ = 161243136.

The previous prime is 491785339. The next prime is 491785351. The reversal of 491785344 is 443587194.

491785344 is a `hidden beast` number, since 49 + 1 + 78 + 534 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 491785344.

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, 3017007 + ... + 3017169.

Almost surely, 2^491785344 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 491785344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745901520).

491785344 is an abundant number, since it is smaller than the sum of its proper divisors (1000017696).

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

491785344 is an equidigital number, since it uses as much as digits as its factorization.

491785344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 265 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 491785344 is about 22176.2337650017. The cubic root of 491785344 is about 789.3298509505.

The spelling of 491785344 in words is "four hundred ninety-one million, seven hundred eighty-five thousand, three hundred forty-four".