195291059 has 2 divisors, whose sum is σ = 195291060. Its totient is φ = 195291058.

The previous prime is 195291043. The next prime is 195291067. The reversal of 195291059 is 950192591.

It is a strong prime.

It is an emirp because it is prime and its reverse (950192591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195291059 - 2⁴ = 195291043 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (195297059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97645529 + 97645530.

It is an arithmetic number, because the mean of its divisors is an integer number (97645530).

Almost surely, 2^195291059 is an apocalyptic number.

195291059 is a deficient number, since it is larger than the sum of its proper divisors (1).

195291059 is an equidigital number, since it uses as much as digits as its factorization.

195291059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 195291059 is about 13974.6577417839. The cubic root of 195291059 is about 580.1773724260.

The spelling of 195291059 in words is "one hundred ninety-five million, two hundred ninety-one thousand, fifty-nine".