491680922 has 8 divisors (see below), whose sum is σ = 738226272. Its totient is φ = 245605500.

The previous prime is 491680883. The next prime is 491680939. The reversal of 491680922 is 229086194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 491680922.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114854 + ... + 119057.

It is an arithmetic number, because the mean of its divisors is an integer number (92278284).

Almost surely, 2^491680922 is an apocalyptic number.

491680922 is a deficient number, since it is larger than the sum of its proper divisors (246545350).

491680922 is a wasteful number, since it uses less digits than its factorization.

491680922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234964.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 491680922 is about 22173.8792726938. The cubic root of 491680922 is about 789.2739802085.

The spelling of 491680922 in words is "four hundred ninety-one million, six hundred eighty thousand, nine hundred twenty-two".