491342144 has 56 divisors (see below), whose sum is σ = 989990400. Its totient is φ = 241933824.

The previous prime is 491342113. The next prime is 491342149. The reversal of 491342144 is 441243194.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 491342144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491342149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2203217 + ... + 2203439.

It is an arithmetic number, because the mean of its divisors is an integer number (17678400).

Almost surely, 2^491342144 is an apocalyptic number.

It is an amenable number.

491342144 is an abundant number, since it is smaller than the sum of its proper divisors (498648256).

491342144 is a wasteful number, since it uses less digits than its factorization.

491342144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 597 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 491342144 is about 22166.2388329640. The cubic root of 491342144 is about 789.0926633666.

The spelling of 491342144 in words is "four hundred ninety-one million, three hundred forty-two thousand, one hundred forty-four".