195930064489 has 2 divisors, whose sum is σ = 195930064490. Its totient is φ = 195930064488.

The previous prime is 195930064471. The next prime is 195930064591. The reversal of 195930064489 is 984460039591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155478798864 + 40451265625 = 394308^2 + 201125^2 .

It is a cyclic number.

It is not a de Polignac number, because 195930064489 - 2¹⁵ = 195930031721 is a prime.

It is a super-3 number, since 3×195930064489³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (195930064469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97965032244 + 97965032245.

It is an arithmetic number, because the mean of its divisors is an integer number (97965032245).

Almost surely, 2^195930064489 is an apocalyptic number.

It is an amenable number.

195930064489 is a deficient number, since it is larger than the sum of its proper divisors (1).

195930064489 is an equidigital number, since it uses as much as digits as its factorization.

195930064489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 195930064489 in words is "one hundred ninety-five billion, nine hundred thirty million, sixty-four thousand, four hundred eighty-nine".