1659201017 has 2 divisors, whose sum is σ = 1659201018. Its totient is φ = 1659201016.

The previous prime is 1659201007. The next prime is 1659201029. The reversal of 1659201017 is 7101029561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1582130176 + 77070841 = 39776^2 + 8779^2 .

It is a cyclic number.

It is not a de Polignac number, because 1659201017 - 2⁴ = 1659201001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1659201007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829600508 + 829600509.

It is an arithmetic number, because the mean of its divisors is an integer number (829600509).

Almost surely, 2^1659201017 is an apocalyptic number.

It is an amenable number.

1659201017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659201017 is an equidigital number, since it uses as much as digits as its factorization.

1659201017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 1659201017 is about 40733.2912615713. The cubic root of 1659201017 is about 1183.8581503216.

The spelling of 1659201017 in words is "one billion, six hundred fifty-nine million, two hundred one thousand, seventeen".