491168 has 12 divisors (see below), whose sum is σ = 967050. Its totient is φ = 245568.

The previous prime is 491167. The next prime is 491171. The reversal of 491168 is 861194.

It can be written as a sum of positive squares in only one way, i.e., 446224 + 44944 = 668^2 + 212^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 491168.

It is not an unprimeable number, because it can be changed into a prime (491167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7643 + ... + 7706.

2⁴⁹¹¹⁶⁸ is an apocalyptic number.

It is an amenable number.

491168 is a deficient number, since it is larger than the sum of its proper divisors (475882).

491168 is a wasteful number, since it uses less digits than its factorization.

491168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15359 (or 15351 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 491168 is about 700.8337891398. The cubic root of 491168 is about 78.8999427596.

The spelling of 491168 in words is "four hundred ninety-one thousand, one hundred sixty-eight".