2020415209 has 2 divisors, whose sum is σ = 2020415210. Its totient is φ = 2020415208.

The previous prime is 2020415203. The next prime is 2020415249. The reversal of 2020415209 is 9025140202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1820899584 + 199515625 = 42672^2 + 14125^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020415209 - 2¹³ = 2020407017 is a prime.

It is not a weakly prime, because it can be changed into another prime (2020415203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010207604 + 1010207605.

It is an arithmetic number, because the mean of its divisors is an integer number (1010207605).

Almost surely, 2^2020415209 is an apocalyptic number.

It is an amenable number.

2020415209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020415209 is an equidigital number, since it uses as much as digits as its factorization.

2020415209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2020415209 is about 44949.0290106472. The cubic root of 2020415209 is about 1264.1934709011.

The spelling of 2020415209 in words is "two billion, twenty million, four hundred fifteen thousand, two hundred nine".