491851460 has 24 divisors (see below), whose sum is σ = 1034799360. Its totient is φ = 196376544.

The previous prime is 491851447. The next prime is 491851511. The reversal of 491851460 is 64158194.

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, 11540 + ... + 33419.

It is an arithmetic number, because the mean of its divisors is an integer number (43116640).

Almost surely, 2^491851460 is an apocalyptic number.

It is an amenable number.

491851460 is an abundant number, since it is smaller than the sum of its proper divisors (542947900).

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

491851460 is a wasteful number, since it uses less digits than its factorization.

491851460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45515 (or 45513 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 491851460 is about 22177.7244098668. The cubic root of 491851460 is about 789.3652220696.

The spelling of 491851460 in words is "four hundred ninety-one million, eight hundred fifty-one thousand, four hundred sixty".