491830005 has 16 divisors (see below), whose sum is σ = 787481280. Its totient is φ = 262124928.

The previous prime is 491829997. The next prime is 491830019. The reversal of 491830005 is 500038194.

It is not a de Polignac number, because 491830005 - 2³ = 491829997 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12081 + ... + 33609.

It is an arithmetic number, because the mean of its divisors is an integer number (49217580).

Almost surely, 2^491830005 is an apocalyptic number.

It is an amenable number.

491830005 is a deficient number, since it is larger than the sum of its proper divisors (295651275).

491830005 is a wasteful number, since it uses less digits than its factorization.

491830005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23060.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 491830005 is about 22177.2406985179. The cubic root of 491830005 is about 789.3537442973.

Adding to 491830005 its reverse (500038194), we get a palindrome (991868199).

The spelling of 491830005 in words is "four hundred ninety-one million, eight hundred thirty thousand, five".