489257161 has 8 divisors (see below), whose sum is σ = 519536160. Its totient is φ = 459144768.

The previous prime is 489257143. The next prime is 489257189. The reversal of 489257161 is 161752984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489257161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489257761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35571 + ... + 47368.

It is an arithmetic number, because the mean of its divisors is an integer number (64942020).

Almost surely, 2^489257161 is an apocalyptic number.

It is an amenable number.

489257161 is a deficient number, since it is larger than the sum of its proper divisors (30278999).

489257161 is a wasteful number, since it uses less digits than its factorization.

489257161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83303.

The product of its digits is 120960, while the sum is 43.

The square root of 489257161 is about 22119.1582344356. The cubic root of 489257161 is about 787.9749239403.

The spelling of 489257161 in words is "four hundred eighty-nine million, two hundred fifty-seven thousand, one hundred sixty-one".