491158110 has 32 divisors (see below), whose sum is σ = 1216806912. Its totient is φ = 126750240.

The previous prime is 491158099. The next prime is 491158111. The reversal of 491158110 is 11851194.

It is a happy number.

It is a super-3 number, since 3×491158110³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491158111) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 263134 + ... + 264993.

It is an arithmetic number, because the mean of its divisors is an integer number (38025216).

Almost surely, 2^491158110 is an apocalyptic number.

491158110 is an abundant number, since it is smaller than the sum of its proper divisors (725648802).

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

491158110 is a wasteful number, since it uses less digits than its factorization.

491158110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528168.

The product of its (nonzero) digits is 1440, while the sum is 30.

The square root of 491158110 is about 22162.0872211983. The cubic root of 491158110 is about 788.9941318812.

The spelling of 491158110 in words is "four hundred ninety-one million, one hundred fifty-eight thousand, one hundred ten".