195609847 has 2 divisors, whose sum is σ = 195609848. Its totient is φ = 195609846.

The previous prime is 195609829. The next prime is 195609853. The reversal of 195609847 is 748906591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195609847 - 2²³ = 187221239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195609847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195609857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97804923 + 97804924.

It is an arithmetic number, because the mean of its divisors is an integer number (97804924).

Almost surely, 2^195609847 is an apocalyptic number.

195609847 is a deficient number, since it is larger than the sum of its proper divisors (1).

195609847 is an equidigital number, since it uses as much as digits as its factorization.

195609847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 195609847 is about 13986.0590231845. The cubic root of 195609847 is about 580.4928895803.

The spelling of 195609847 in words is "one hundred ninety-five million, six hundred nine thousand, eight hundred forty-seven".