2020809017 has 2 divisors, whose sum is σ = 2020809018. Its totient is φ = 2020809016.

The previous prime is 2020808947. The next prime is 2020809041. The reversal of 2020809017 is 7109080202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1043871481 + 976937536 = 32309^2 + 31256^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020809017 - 2²⁰ = 2019760441 is a prime.

It is not a weakly prime, because it can be changed into another prime (2020809317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010404508 + 1010404509.

It is an arithmetic number, because the mean of its divisors is an integer number (1010404509).

Almost surely, 2^2020809017 is an apocalyptic number.

It is an amenable number.

2020809017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020809017 is an equidigital number, since it uses as much as digits as its factorization.

2020809017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2020809017 is about 44953.4094035147. The cubic root of 2020809017 is about 1264.2756020653.

Adding to 2020809017 its reverse (7109080202), we get a palindrome (9129889219).

The spelling of 2020809017 in words is "two billion, twenty million, eight hundred nine thousand, seventeen".