195650089 has 2 divisors, whose sum is σ = 195650090. Its totient is φ = 195650088.

The previous prime is 195650027. The next prime is 195650099. The reversal of 195650089 is 980056591.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129504400 + 66145689 = 11380^2 + 8133^2 .

It is a cyclic number.

It is not a de Polignac number, because 195650089 - 2⁹ = 195649577 is a prime.

It is a super-4 number, since 4×195650089⁴ (a number of 34 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (195650099) 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, 97825044 + 97825045.

It is an arithmetic number, because the mean of its divisors is an integer number (97825045).

Almost surely, 2^195650089 is an apocalyptic number.

It is an amenable number.

195650089 is a deficient number, since it is larger than the sum of its proper divisors (1).

195650089 is an equidigital number, since it uses as much as digits as its factorization.

195650089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 195650089 is about 13987.4975960677. The cubic root of 195650089 is about 580.5326943131.

The spelling of 195650089 in words is "one hundred ninety-five million, six hundred fifty thousand, eighty-nine".