489384651938 has 32 divisors (see below), whose sum is σ = 904695595776. Its totient is φ = 193342097088.

The previous prime is 489384651913. The next prime is 489384652037. The reversal of 489384651938 is 839156483984.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 1674281 + ... + 1944732.

It is an arithmetic number, because the mean of its divisors is an integer number (28271737368).

Almost surely, 2^489384651938 is an apocalyptic number.

489384651938 is a deficient number, since it is larger than the sum of its proper divisors (415310943838).

489384651938 is a wasteful number, since it uses less digits than its factorization.

489384651938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3619778.

The product of its digits is 179159040, while the sum is 68.

The spelling of 489384651938 in words is "four hundred eighty-nine billion, three hundred eighty-four million, six hundred fifty-one thousand, nine hundred thirty-eight".