489640164 has 96 divisors (see below), whose sum is σ = 1283702784. Its totient is φ = 144236160.

The previous prime is 489640153. The next prime is 489640199. The reversal of 489640164 is 461046984.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497617 + ... + 498599.

It is an arithmetic number, because the mean of its divisors is an integer number (13371904).

Almost surely, 2^489640164 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 489640164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641851392).

489640164 is an abundant number, since it is smaller than the sum of its proper divisors (794062620).

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

489640164 is a wasteful number, since it uses less digits than its factorization.

489640164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 489640164 is about 22127.8142616934. The cubic root of 489640164 is about 788.1804859410.

The spelling of 489640164 in words is "four hundred eighty-nine million, six hundred forty thousand, one hundred sixty-four".