195089563 has 2 divisors, whose sum is σ = 195089564. Its totient is φ = 195089562.

The previous prime is 195089561. The next prime is 195089579. The reversal of 195089563 is 365980591.

195089563 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 is an emirp because it is prime and its reverse (365980591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195089563 - 2¹ = 195089561 is a prime.

Together with 195089561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (195089561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97544781 + 97544782.

It is an arithmetic number, because the mean of its divisors is an integer number (97544782).

Almost surely, 2^195089563 is an apocalyptic number.

195089563 is a deficient number, since it is larger than the sum of its proper divisors (1).

195089563 is an equidigital number, since it uses as much as digits as its factorization.

195089563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 195089563 is about 13967.4465454499. The cubic root of 195089563 is about 579.9777666864.

The spelling of 195089563 in words is "one hundred ninety-five million, eighty-nine thousand, five hundred sixty-three".