2090328509 has 2 divisors, whose sum is σ = 2090328510. Its totient is φ = 2090328508.

The previous prime is 2090328473. The next prime is 2090328521. The reversal of 2090328509 is 9058230902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1873591225 + 216737284 = 43285^2 + 14722^2 .

It is a cyclic number.

It is not a de Polignac number, because 2090328509 - 2²⁸ = 1821893053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2090328589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045164254 + 1045164255.

It is an arithmetic number, because the mean of its divisors is an integer number (1045164255).

Almost surely, 2^2090328509 is an apocalyptic number.

It is an amenable number.

2090328509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2090328509 is an equidigital number, since it uses as much as digits as its factorization.

2090328509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 2090328509 is about 45720.1105532347. The cubic root of 2090328509 is about 1278.6102488355.

The spelling of 2090328509 in words is "two billion, ninety million, three hundred twenty-eight thousand, five hundred nine".