491729645982 has 16 divisors (see below), whose sum is σ = 987285984912. Its totient is φ = 163272099840.

The previous prime is 491729645941. The next prime is 491729646017. The reversal of 491729645982 is 289546927194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159443869 + ... + 159446952.

It is an arithmetic number, because the mean of its divisors is an integer number (61705374057).

Almost surely, 2^491729645982 is an apocalyptic number.

491729645982 is an abundant number, since it is smaller than the sum of its proper divisors (495556338930).

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

491729645982 is a wasteful number, since it uses less digits than its factorization.

491729645982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318891083.

The product of its digits is 78382080, while the sum is 66.

The spelling of 491729645982 in words is "four hundred ninety-one billion, seven hundred twenty-nine million, six hundred forty-five thousand, nine hundred eighty-two".