489359181 has 4 divisors (see below), whose sum is σ = 652478912. Its totient is φ = 326239452.

The previous prime is 489359177. The next prime is 489359183. The reversal of 489359181 is 181953984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 489359181 - 2² = 489359177 is a prime.

It is a super-2 number, since 2×489359181² = 478944816057981522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 489359181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489359183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81559861 + ... + 81559866.

It is an arithmetic number, because the mean of its divisors is an integer number (163119728).

Almost surely, 2^489359181 is an apocalyptic number.

It is an amenable number.

489359181 is a deficient number, since it is larger than the sum of its proper divisors (163119731).

489359181 is a wasteful number, since it uses less digits than its factorization.

489359181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163119730.

The product of its digits is 311040, while the sum is 48.

The square root of 489359181 is about 22121.4642598540. The cubic root of 489359181 is about 788.0296896962.

The spelling of 489359181 in words is "four hundred eighty-nine million, three hundred fifty-nine thousand, one hundred eighty-one".