489430188 has 84 divisors (see below), whose sum is σ = 1383055968. Its totient is φ = 150582240.

The previous prime is 489430181. The next prime is 489430217. The reversal of 489430188 is 881034984.

It is not an unprimeable number, because it can be changed into a prime (489430181) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 31453 + ... + 44363.

It is an arithmetic number, because the mean of its divisors is an integer number (16464952).

Almost surely, 2^489430188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489430188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691527984).

489430188 is an abundant number, since it is smaller than the sum of its proper divisors (893625780).

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

489430188 is a wasteful number, since it uses less digits than its factorization.

489430188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12946 (or 12929 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 489430188 is about 22123.0691360851. The cubic root of 489430188 is about 788.0678027497.

The spelling of 489430188 in words is "four hundred eighty-nine million, four hundred thirty thousand, one hundred eighty-eight".