209382737089 has 2 divisors, whose sum is σ = 209382737090. Its totient is φ = 209382737088.

The previous prime is 209382737059. The next prime is 209382737191. The reversal of 209382737089 is 980737283902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174647096464 + 34735640625 = 417908^2 + 186375^2 .

It is a cyclic number.

It is not a de Polignac number, because 209382737089 - 2²³ = 209374348481 is a prime.

It is a super-2 number, since 2×209382737089² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (209382737059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104691368544 + 104691368545.

It is an arithmetic number, because the mean of its divisors is an integer number (104691368545).

Almost surely, 2^209382737089 is an apocalyptic number.

It is an amenable number.

209382737089 is a deficient number, since it is larger than the sum of its proper divisors (1).

209382737089 is an equidigital number, since it uses as much as digits as its factorization.

209382737089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 209382737089 in words is "two hundred nine billion, three hundred eighty-two million, seven hundred thirty-seven thousand, eighty-nine".