2093945509 has 2 divisors, whose sum is σ = 2093945510. Its totient is φ = 2093945508.

The previous prime is 2093945473. The next prime is 2093945519. The reversal of 2093945509 is 9055493902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2091232900 + 2712609 = 45730^2 + 1647^2 .

It is a cyclic number.

It is not a de Polignac number, because 2093945509 - 2⁹ = 2093944997 is a prime.

It is a super-2 number, since 2×2093945509² = 8769215589322538162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2093945519) 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, 1046972754 + 1046972755.

It is an arithmetic number, because the mean of its divisors is an integer number (1046972755).

Almost surely, 2^2093945509 is an apocalyptic number.

It is an amenable number.

2093945509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2093945509 is an equidigital number, since it uses as much as digits as its factorization.

2093945509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 437400, while the sum is 46.

The square root of 2093945509 is about 45759.6493539887. The cubic root of 2093945509 is about 1279.3473049716.

The spelling of 2093945509 in words is "two billion, ninety-three million, nine hundred forty-five thousand, five hundred nine".