491209310592 has 1728 divisors, whose sum is σ = 2018293355520. Its totient is φ = 113218560000.

The previous prime is 491209310591. The next prime is 491209310659. The reversal of 491209310592 is 295013902194.

491209310592 is a `hidden beast` number, since 4 + 9 + 1 + 20 + 9 + 31 + 0 + 592 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491209310591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 3253041717 + ... + 3253041867.

It is an arithmetic number, because the mean of its divisors is an integer number (1167993840).

Almost surely, 2^491209310592 is an apocalyptic number.

491209310592 is a gapful number since it is divisible by the number (42) 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 491209310592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009146677760).

491209310592 is an abundant number, since it is smaller than the sum of its proper divisors (1527084044928).

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

491209310592 is a wasteful number, since it uses less digits than its factorization.

491209310592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 491209310592 in words is "four hundred ninety-one billion, two hundred nine million, three hundred ten thousand, five hundred ninety-two".