195888047 has 2 divisors, whose sum is σ = 195888048. Its totient is φ = 195888046.

The previous prime is 195888013. The next prime is 195888071. The reversal of 195888047 is 740888591.

It is a strong prime.

It is an emirp because it is prime and its reverse (740888591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195888047 - 2²² = 191693743 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 195887986 and 195888004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195888097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97944023 + 97944024.

It is an arithmetic number, because the mean of its divisors is an integer number (97944024).

Almost surely, 2^195888047 is an apocalyptic number.

195888047 is a deficient number, since it is larger than the sum of its proper divisors (1).

195888047 is an equidigital number, since it uses as much as digits as its factorization.

195888047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 195888047 is about 13996.0011074592. The cubic root of 195888047 is about 580.7679551854.

The spelling of 195888047 in words is "one hundred ninety-five million, eight hundred eighty-eight thousand, forty-seven".