489011281920 has 1200 divisors, whose sum is σ = 2082822271200. Its totient is φ = 109395836928.

The previous prime is 489011281907. The next prime is 489011281931. The reversal of 489011281920 is 29182110984.

489011281920 is a `hidden beast` number, since 489 + 0 + 1 + 1 + 2 + 81 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 10404495337 + ... + 10404495383.

It is an arithmetic number, because the mean of its divisors is an integer number (1735685226).

Almost surely, 2^489011281920 is an apocalyptic number.

489011281920 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 489011281920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041411135600).

489011281920 is an abundant number, since it is smaller than the sum of its proper divisors (1593810989280).

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

489011281920 is an frugal number, since it uses more digits than its factorization.

489011281920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 489011281920 in words is "four hundred eighty-nine billion, eleven million, two hundred eighty-one thousand, nine hundred twenty".