491844264 has 64 divisors (see below), whose sum is σ = 1287290880. Its totient is φ = 156408000.

The previous prime is 491844257. The next prime is 491844313. The reversal of 491844264 is 462448194.

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, 48169 + ... + 57479.

It is an arithmetic number, because the mean of its divisors is an integer number (20113920).

Almost surely, 2^491844264 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 491844264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643645440).

491844264 is an abundant number, since it is smaller than the sum of its proper divisors (795446616).

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

491844264 is a wasteful number, since it uses less digits than its factorization.

491844264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9422 (or 9418 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 491844264 is about 22177.5621744140. The cubic root of 491844264 is about 789.3613724657.

The spelling of 491844264 in words is "four hundred ninety-one million, eight hundred forty-four thousand, two hundred sixty-four".