489116161 has 4 divisors (see below), whose sum is σ = 489535024. Its totient is φ = 488697300.

The previous prime is 489116083. The next prime is 489116179. The reversal of 489116161 is 161611984.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489116161 is a prime.

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 489116161.

It is not an unprimeable number, because it can be changed into a prime (489116461) 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, 207675 + ... + 210016.

It is an arithmetic number, because the mean of its divisors is an integer number (122383756).

Almost surely, 2^489116161 is an apocalyptic number.

It is an amenable number.

489116161 is a deficient number, since it is larger than the sum of its proper divisors (418863).

489116161 is a wasteful number, since it uses less digits than its factorization.

489116161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418862.

The product of its digits is 10368, while the sum is 37.

The square root of 489116161 is about 22115.9707225344. The cubic root of 489116161 is about 787.8992206442.

The spelling of 489116161 in words is "four hundred eighty-nine million, one hundred sixteen thousand, one hundred sixty-one".