491165752 has 64 divisors (see below), whose sum is σ = 1162828800. Its totient is φ = 188922240.

The previous prime is 491165749. The next prime is 491165761. The reversal of 491165752 is 257561194.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43618 + ... + 53710.

It is an arithmetic number, because the mean of its divisors is an integer number (18169200).

Almost surely, 2^491165752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491165752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581414400).

491165752 is an abundant number, since it is smaller than the sum of its proper divisors (671663048).

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

491165752 is a wasteful number, since it uses less digits than its factorization.

491165752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196 (or 10192 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 491165752 is about 22162.2596320863. The cubic root of 491165752 is about 788.9982238846.

The spelling of 491165752 in words is "four hundred ninety-one million, one hundred sixty-five thousand, seven hundred fifty-two".