491105824169 has 8 divisors (see below), whose sum is σ = 498725288640. Its totient is φ = 483505873200.

The previous prime is 491105824163. The next prime is 491105824193. The reversal of 491105824169 is 961428501194.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491105824169 - 2³⁶ = 422386347433 is a prime.

It is a super-2 number, since 2×491105824169² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (491105824163) 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 7 ways as a sum of consecutive naturals, for example, 4827647 + ... + 4928324.

It is an arithmetic number, because the mean of its divisors is an integer number (62340661080).

Almost surely, 2^491105824169 is an apocalyptic number.

It is an amenable number.

491105824169 is a deficient number, since it is larger than the sum of its proper divisors (7619464471).

491105824169 is an equidigital number, since it uses as much as digits as its factorization.

491105824169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9756751.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 491105824169 in words is "four hundred ninety-one billion, one hundred five million, eight hundred twenty-four thousand, one hundred sixty-nine".