489381642 has 16 divisors (see below), whose sum is σ = 1087514880. Its totient is φ = 163127196.

The previous prime is 489381637. The next prime is 489381653. The reversal of 489381642 is 246183984.

It is a happy number.

489381642 is a `hidden beast` number, since 489 + 3 + 8 + 164 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4531258 + ... + 4531365.

It is an arithmetic number, because the mean of its divisors is an integer number (67969680).

Almost surely, 2^489381642 is an apocalyptic number.

489381642 is an abundant number, since it is smaller than the sum of its proper divisors (598133238).

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

489381642 is a wasteful number, since it uses less digits than its factorization.

489381642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9062634 (or 9062628 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 489381642 is about 22121.9719283793. The cubic root of 489381642 is about 788.0417460512.

The spelling of 489381642 in words is "four hundred eighty-nine million, three hundred eighty-one thousand, six hundred forty-two".