195105047 has 2 divisors, whose sum is σ = 195105048. Its totient is φ = 195105046.

The previous prime is 195105017. The next prime is 195105059. The reversal of 195105047 is 740501591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195105047 - 2¹⁶ = 195039511 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195105017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97552523 + 97552524.

It is an arithmetic number, because the mean of its divisors is an integer number (97552524).

Almost surely, 2^195105047 is an apocalyptic number.

195105047 is a deficient number, since it is larger than the sum of its proper divisors (1).

195105047 is an equidigital number, since it uses as much as digits as its factorization.

195105047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 195105047 is about 13968.0008233104. Note that the first 3 decimals coincide. The cubic root of 195105047 is about 579.9931103026.

The spelling of 195105047 in words is "one hundred ninety-five million, one hundred five thousand, forty-seven".