195002837209 has 2 divisors, whose sum is σ = 195002837210. Its totient is φ = 195002837208.

The previous prime is 195002837207. The next prime is 195002837213. The reversal of 195002837209 is 902738200591.

195002837209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132965976025 + 62036861184 = 364645^2 + 249072^2 .

It is a cyclic number.

It is not a de Polignac number, because 195002837209 - 2¹ = 195002837207 is a prime.

It is a super-2 number, since 2×195002837209² (a number of 23 digits) contains 22 as substring.

Together with 195002837207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (195002837207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97501418604 + 97501418605.

It is an arithmetic number, because the mean of its divisors is an integer number (97501418605).

Almost surely, 2^195002837209 is an apocalyptic number.

It is an amenable number.

195002837209 is a deficient number, since it is larger than the sum of its proper divisors (1).

195002837209 is an equidigital number, since it uses as much as digits as its factorization.

195002837209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 195002837209 in words is "one hundred ninety-five billion, two million, eight hundred thirty-seven thousand, two hundred nine".