491585938 has 8 divisors (see below), whose sum is σ = 737473932. Its totient is φ = 245761296.

The previous prime is 491585911. The next prime is 491585947. The reversal of 491585938 is 839585194.

It can be written as a sum of positive squares in 2 ways, for example, as 489161689 + 2424249 = 22117^2 + 1557^2 .

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

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, 18156 + ... + 36232.

Almost surely, 2^491585938 is an apocalyptic number.

491585938 is a deficient number, since it is larger than the sum of its proper divisors (245887994).

491585938 is a wasteful number, since it uses less digits than its factorization.

491585938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31676.

The product of its digits is 1555200, while the sum is 52.

The square root of 491585938 is about 22171.7373699041. The cubic root of 491585938 is about 789.2231523753.

The spelling of 491585938 in words is "four hundred ninety-one million, five hundred eighty-five thousand, nine hundred thirty-eight".