491559146 has 24 divisors (see below), whose sum is σ = 840453120. Its totient is φ = 214929936.

The previous prime is 491559137. The next prime is 491559191. The reversal of 491559146 is 641955194.

It is a junction number, because it is equal to n+sod(n) for n = 491559097 and 491559106.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31850 + ... + 44693.

It is an arithmetic number, because the mean of its divisors is an integer number (35018880).

Almost surely, 2^491559146 is an apocalyptic number.

491559146 is a deficient number, since it is larger than the sum of its proper divisors (348893974).

491559146 is a wasteful number, since it uses less digits than its factorization.

491559146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76590 (or 76577 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The square root of 491559146 is about 22171.1331690557. The cubic root of 491559146 is about 789.2088142578.

The spelling of 491559146 in words is "four hundred ninety-one million, five hundred fifty-nine thousand, one hundred forty-six".