489585137 has 2 divisors, whose sum is σ = 489585138. Its totient is φ = 489585136.

The previous prime is 489585133. The next prime is 489585157. The reversal of 489585137 is 731585984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362369296 + 127215841 = 19036^2 + 11279^2 .

It is a cyclic number.

It is not a de Polignac number, because 489585137 - 2² = 489585133 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (489585133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244792568 + 244792569.

It is an arithmetic number, because the mean of its divisors is an integer number (244792569).

Almost surely, 2^489585137 is an apocalyptic number.

It is an amenable number.

489585137 is a deficient number, since it is larger than the sum of its proper divisors (1).

489585137 is an equidigital number, since it uses as much as digits as its factorization.

489585137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The square root of 489585137 is about 22126.5708368920. The cubic root of 489585137 is about 788.1509589294.

The spelling of 489585137 in words is "four hundred eighty-nine million, five hundred eighty-five thousand, one hundred thirty-seven".