491806472 has 16 divisors (see below), whose sum is σ = 922905900. Its totient is φ = 245698240.

The previous prime is 491806463. The next prime is 491806487. The reversal of 491806472 is 274608194.

It can be written as a sum of positive squares in 2 ways, for example, as 405055876 + 86750596 = 20126^2 + 9314^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15179 + ... + 34842.

Almost surely, 2^491806472 is an apocalyptic number.

It is an amenable number.

491806472 is a deficient number, since it is larger than the sum of its proper divisors (431099428).

491806472 is a wasteful number, since it uses less digits than its factorization.

491806472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51256 (or 51252 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 491806472 is about 22176.7101257152. The cubic root of 491806472 is about 789.3411544744.

The spelling of 491806472 in words is "four hundred ninety-one million, eight hundred six thousand, four hundred seventy-two".