489712078818 has 24 divisors (see below), whose sum is σ = 1061622397056. Its totient is φ = 163148196600.

The previous prime is 489712078813. The next prime is 489712078913. The reversal of 489712078818 is 818870217984.

489712078818 is a `hidden beast` number, since 489 + 7 + 1 + 2 + 0 + 78 + 81 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (489712078811) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 7396378 + ... + 7462293.

It is an arithmetic number, because the mean of its divisors is an integer number (44234266544).

Almost surely, 2^489712078818 is an apocalyptic number.

489712078818 is an abundant number, since it is smaller than the sum of its proper divisors (571910318238).

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

489712078818 is a wasteful number, since it uses less digits than its factorization.

489712078818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14860510 (or 14860507 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 63.

The spelling of 489712078818 in words is "four hundred eighty-nine billion, seven hundred twelve million, seventy-eight thousand, eight hundred eighteen".