195852221659 has 2 divisors, whose sum is σ = 195852221660. Its totient is φ = 195852221658.

The previous prime is 195852221651. The next prime is 195852221687. The reversal of 195852221659 is 956122258591.

It is a weak prime.

It is an emirp because it is prime and its reverse (956122258591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195852221659 - 2³ = 195852221651 is a prime.

It is not a weakly prime, because it can be changed into another prime (195852221651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97926110829 + 97926110830.

It is an arithmetic number, because the mean of its divisors is an integer number (97926110830).

Almost surely, 2^195852221659 is an apocalyptic number.

195852221659 is a deficient number, since it is larger than the sum of its proper divisors (1).

195852221659 is an equidigital number, since it uses as much as digits as its factorization.

195852221659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888000, while the sum is 55.

The spelling of 195852221659 in words is "one hundred ninety-five billion, eight hundred fifty-two million, two hundred twenty-one thousand, six hundred fifty-nine".