492440161 has 2 divisors, whose sum is σ = 492440162. Its totient is φ = 492440160.

The previous prime is 492440159. The next prime is 492440183. The reversal of 492440161 is 161044294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311699025 + 180741136 = 17655^2 + 13444^2 .

It is a cyclic number.

It is not a de Polignac number, because 492440161 - 2¹ = 492440159 is a prime.

Together with 492440159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (492410161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246220080 + 246220081.

It is an arithmetic number, because the mean of its divisors is an integer number (246220081).

Almost surely, 2^492440161 is an apocalyptic number.

It is an amenable number.

492440161 is a deficient number, since it is larger than the sum of its proper divisors (1).

492440161 is an equidigital number, since it uses as much as digits as its factorization.

492440161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 492440161 is about 22190.9927898686. The cubic root of 492440161 is about 789.6800290492.

The spelling of 492440161 in words is "four hundred ninety-two million, four hundred forty thousand, one hundred sixty-one".