489312381890 has 32 divisors (see below), whose sum is σ = 904767183360. Its totient is φ = 190392876864.

The previous prime is 489312381881. The next prime is 489312381911. The reversal of 489312381890 is 98183213984.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1551431 + ... + 1839989.

It is an arithmetic number, because the mean of its divisors is an integer number (28273974480).

Almost surely, 2^489312381890 is an apocalyptic number.

489312381890 is a deficient number, since it is larger than the sum of its proper divisors (415454801470).

489312381890 is a wasteful number, since it uses less digits than its factorization.

489312381890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293186.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 489312381890 in words is "four hundred eighty-nine billion, three hundred twelve million, three hundred eighty-one thousand, eight hundred ninety".