489581564 has 12 divisors (see below), whose sum is σ = 872933544. Its totient is φ = 240171984.

The previous prime is 489581551. The next prime is 489581593. The reversal of 489581564 is 465185984.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154462 + ... + 1154885.

It is an arithmetic number, because the mean of its divisors is an integer number (72744462).

Almost surely, 2^489581564 is an apocalyptic number.

It is an amenable number.

489581564 is a deficient number, since it is larger than the sum of its proper divisors (383351980).

489581564 is a wasteful number, since it uses less digits than its factorization.

489581564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309404 (or 2309402 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 50.

The square root of 489581564 is about 22126.4900967144. The cubic root of 489581564 is about 788.1490416120.

The spelling of 489581564 in words is "four hundred eighty-nine million, five hundred eighty-one thousand, five hundred sixty-four".