489636346920 has 256 divisors, whose sum is σ = 1711964160000. Its totient is φ = 109706628096.

The previous prime is 489636346909. The next prime is 489636346961. The reversal of 489636346920 is 29643636984.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56936781 + ... + 56945379.

It is an arithmetic number, because the mean of its divisors is an integer number (6687360000).

Almost surely, 2^489636346920 is an apocalyptic number.

489636346920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489636346920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855982080000).

489636346920 is an abundant number, since it is smaller than the sum of its proper divisors (1222327813080).

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

489636346920 is a wasteful number, since it uses less digits than its factorization.

489636346920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9952 (or 9948 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 60.

The spelling of 489636346920 in words is "four hundred eighty-nine billion, six hundred thirty-six million, three hundred forty-six thousand, nine hundred twenty".