491118 has 8 divisors (see below), whose sum is σ = 982248. Its totient is φ = 163704.

The previous prime is 491083. The next prime is 491129. The reversal of 491118 is 811194.

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

491118 is an admirable number.

It is a congruent number.

It is an unprimeable number.

491118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40921 + ... + 40932.

It is an arithmetic number, because the mean of its divisors is an integer number (122781).

2⁴⁹¹¹¹⁸ is an apocalyptic number.

491118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491118 is a wasteful number, since it uses less digits than its factorization.

491118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81858.

The product of its digits is 288, while the sum is 24.

The square root of 491118 is about 700.7981164358. The cubic root of 491118 is about 78.8972653790.

The spelling of 491118 in words is "four hundred ninety-one thousand, one hundred eighteen".