195917063 has 2 divisors, whose sum is σ = 195917064. Its totient is φ = 195917062.

The previous prime is 195917053. The next prime is 195917093. The reversal of 195917063 is 360719591.

It is a weak prime.

It is an emirp because it is prime and its reverse (360719591) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195917063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195917063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195917023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97958531 + 97958532.

It is an arithmetic number, because the mean of its divisors is an integer number (97958532).

Almost surely, 2^195917063 is an apocalyptic number.

195917063 is a deficient number, since it is larger than the sum of its proper divisors (1).

195917063 is an equidigital number, since it uses as much as digits as its factorization.

195917063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 195917063 is about 13997.0376508746. The cubic root of 195917063 is about 580.7966292695.

The spelling of 195917063 in words is "one hundred ninety-five million, nine hundred seventeen thousand, sixty-three".