195475879 has 2 divisors, whose sum is σ = 195475880. Its totient is φ = 195475878.

The previous prime is 195475849. The next prime is 195475901. The reversal of 195475879 is 978574591.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (978574591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195475879 - 2²⁷ = 61258151 is a prime.

It is a pancake number, because a pancake can be divided into 195475879 parts by 19772 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195475849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97737939 + 97737940.

It is an arithmetic number, because the mean of its divisors is an integer number (97737940).

Almost surely, 2^195475879 is an apocalyptic number.

195475879 is a deficient number, since it is larger than the sum of its proper divisors (1).

195475879 is an equidigital number, since it uses as much as digits as its factorization.

195475879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 55.

The square root of 195475879 is about 13981.2688623029. The cubic root of 195475879 is about 580.3603379168.

The spelling of 195475879 in words is "one hundred ninety-five million, four hundred seventy-five thousand, eight hundred seventy-nine".