491924180 has 48 divisors (see below), whose sum is σ = 1129464000. Its totient is φ = 178483200.

The previous prime is 491924177. The next prime is 491924227. The reversal of 491924180 is 81429194.

491924180 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107540 + ... + 112020.

It is an arithmetic number, because the mean of its divisors is an integer number (23530500).

Almost surely, 2^491924180 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 491924180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564732000).

491924180 is an abundant number, since it is smaller than the sum of its proper divisors (637539820).

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

491924180 is a wasteful number, since it uses less digits than its factorization.

491924180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000 (or 4998 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 491924180 is about 22179.3638321752. The cubic root of 491924180 is about 789.4041225743.

The spelling of 491924180 in words is "four hundred ninety-one million, nine hundred twenty-four thousand, one hundred eighty".