195170047 has 4 divisors (see below), whose sum is σ = 206650656. Its totient is φ = 183689440.

The previous prime is 195170023. The next prime is 195170051. The reversal of 195170047 is 740071591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195170047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195169994 and 195170021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195170347) 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 in 3 ways as a sum of consecutive naturals, for example, 5740279 + ... + 5740312.

It is an arithmetic number, because the mean of its divisors is an integer number (51662664).

Almost surely, 2^195170047 is an apocalyptic number.

195170047 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

195170047 is a deficient number, since it is larger than the sum of its proper divisors (11480609).

195170047 is a wasteful number, since it uses less digits than its factorization.

195170047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11480608.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 195170047 is about 13970.3273762643. The cubic root of 195170047 is about 580.0575121329.

The spelling of 195170047 in words is "one hundred ninety-five million, one hundred seventy thousand, forty-seven".