491930492930 has 16 divisors (see below), whose sum is σ = 887446999800. Its totient is φ = 196333949952.

The previous prime is 491930492927. The next prime is 491930492939. The reversal of 491930492930 is 39294039194.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 353426683009 + 138503809921 = 594497^2 + 372161^2 .

It is not an unprimeable number, because it can be changed into a prime (491930492939) 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, 54776189 + ... + 54785168.

Almost surely, 2^491930492930 is an apocalyptic number.

491930492930 is a deficient number, since it is larger than the sum of its proper divisors (395516506870).

491930492930 is a wasteful number, since it uses less digits than its factorization.

491930492930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109561813.

The product of its (nonzero) digits is 1889568, while the sum is 53.

The spelling of 491930492930 in words is "four hundred ninety-one billion, nine hundred thirty million, four hundred ninety-two thousand, nine hundred thirty".