491639282 has 16 divisors (see below), whose sum is σ = 757046304. Its totient is φ = 239316000.

The previous prime is 491639243. The next prime is 491639297. The reversal of 491639282 is 282936194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34157 + ... + 46367.

It is an arithmetic number, because the mean of its divisors is an integer number (47315394).

Almost surely, 2^491639282 is an apocalyptic number.

491639282 is a deficient number, since it is larger than the sum of its proper divisors (265407022).

491639282 is a wasteful number, since it uses less digits than its factorization.

491639282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12745.

The product of its digits is 186624, while the sum is 44.

The square root of 491639282 is about 22172.9403102069. The cubic root of 491639282 is about 789.2516986198.

The spelling of 491639282 in words is "four hundred ninety-one million, six hundred thirty-nine thousand, two hundred eighty-two".