491144016 has 40 divisors (see below), whose sum is σ = 1384134624. Its totient is φ = 148831360.

The previous prime is 491144011. The next prime is 491144083. The reversal of 491144016 is 610441194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491144011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464571 + ... + 465626.

Almost surely, 2^491144016 is an apocalyptic number.

It is an amenable number.

491144016 is an abundant number, since it is smaller than the sum of its proper divisors (892990608).

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

491144016 is a wasteful number, since it uses less digits than its factorization.

491144016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930219 (or 930213 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 491144016 is about 22161.7692434517. The cubic root of 491144016 is about 788.9865849634.

The spelling of 491144016 in words is "four hundred ninety-one million, one hundred forty-four thousand, sixteen".