491116822 has 16 divisors (see below), whose sum is σ = 842274720. Its totient is φ = 210388608.

The previous prime is 491116817. The next prime is 491116823. The reversal of 491116822 is 228611194.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491116823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34504 + ... + 46612.

It is an arithmetic number, because the mean of its divisors is an integer number (52642170).

Almost surely, 2^491116822 is an apocalyptic number.

491116822 is a deficient number, since it is larger than the sum of its proper divisors (351157898).

491116822 is a wasteful number, since it uses less digits than its factorization.

491116822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15015.

The product of its digits is 6912, while the sum is 34.

The square root of 491116822 is about 22161.1557009105. The cubic root of 491116822 is about 788.9720229772.

The spelling of 491116822 in words is "four hundred ninety-one million, one hundred sixteen thousand, eight hundred twenty-two".