1659458897 has 2 divisors, whose sum is σ = 1659458898. Its totient is φ = 1659458896.

The previous prime is 1659458891. The next prime is 1659458921. The reversal of 1659458897 is 7988549561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1465664656 + 193794241 = 38284^2 + 13921^2 .

It is a cyclic number.

It is not a de Polignac number, because 1659458897 - 2⁶ = 1659458833 is a prime.

It is not a weakly prime, because it can be changed into another prime (1659458891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829729448 + 829729449.

It is an arithmetic number, because the mean of its divisors is an integer number (829729449).

Almost surely, 2^1659458897 is an apocalyptic number.

It is an amenable number.

1659458897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659458897 is an equidigital number, since it uses as much as digits as its factorization.

1659458897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21772800, while the sum is 62.

The square root of 1659458897 is about 40736.4566083011. The cubic root of 1659458897 is about 1183.9194805485.

The spelling of 1659458897 in words is "one billion, six hundred fifty-nine million, four hundred fifty-eight thousand, eight hundred ninety-seven".