491931068 has 12 divisors (see below), whose sum is σ = 861091392. Its totient is φ = 245904960.

The previous prime is 491931067. The next prime is 491931101. The reversal of 491931068 is 860139194.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491931067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6596 + ... + 32052.

It is an arithmetic number, because the mean of its divisors is an integer number (71757616).

Almost surely, 2^491931068 is an apocalyptic number.

It is an amenable number.

491931068 is a deficient number, since it is larger than the sum of its proper divisors (369160324).

491931068 is a wasteful number, since it uses less digits than its factorization.

491931068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30292 (or 30290 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 491931068 is about 22179.5191111079. The cubic root of 491931068 is about 789.4078070108.

The spelling of 491931068 in words is "four hundred ninety-one million, nine hundred thirty-one thousand, sixty-eight".