489585138 has 16 divisors (see below), whose sum is σ = 1119051840. Its totient is φ = 139881456.

The previous prime is 489585137. The next prime is 489585157. The reversal of 489585138 is 831585984.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (489585133) 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, 5828353 + ... + 5828436.

It is an arithmetic number, because the mean of its divisors is an integer number (69940740).

Almost surely, 2^489585138 is an apocalyptic number.

489585138 is an abundant number, since it is smaller than the sum of its proper divisors (629466702).

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

489585138 is a wasteful number, since it uses less digits than its factorization.

489585138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11656801.

The product of its digits is 1382400, while the sum is 51.

The square root of 489585138 is about 22126.5708594893. The cubic root of 489585138 is about 788.1509594660.

The spelling of 489585138 in words is "four hundred eighty-nine million, five hundred eighty-five thousand, one hundred thirty-eight".