491660372 has 24 divisors (see below), whose sum is σ = 1015042560. Its totient is φ = 203914080.

The previous prime is 491660357. The next prime is 491660413. The reversal of 491660372 is 273066194.

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 7 ways as a sum of consecutive naturals, for example, 282347 + ... + 284082.

It is an arithmetic number, because the mean of its divisors is an integer number (42293440).

Almost surely, 2^491660372 is an apocalyptic number.

It is an amenable number.

491660372 is an abundant number, since it is smaller than the sum of its proper divisors (523382188).

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

491660372 is a wasteful number, since it uses less digits than its factorization.

491660372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566471 (or 566469 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 491660372 is about 22173.4158847932. The cubic root of 491660372 is about 789.2629840485.

The spelling of 491660372 in words is "four hundred ninety-one million, six hundred sixty thousand, three hundred seventy-two".