195872197947 has 8 divisors (see below), whose sum is σ = 265060885056. Its totient is φ = 128632488072.

The previous prime is 195872197943. The next prime is 195872197999. The reversal of 195872197947 is 749791278591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 195872197947 - 2² = 195872197943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195872197943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487244073 + ... + 487244474.

It is an arithmetic number, because the mean of its divisors is an integer number (33132610632).

Almost surely, 2^195872197947 is an apocalyptic number.

195872197947 is a deficient number, since it is larger than the sum of its proper divisors (69188687109).

195872197947 is an equidigital number, since it uses as much as digits as its factorization.

195872197947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974488617.

The product of its digits is 80015040, while the sum is 69.

The spelling of 195872197947 in words is "one hundred ninety-five billion, eight hundred seventy-two million, one hundred ninety-seven thousand, nine hundred forty-seven".