195972235197 has 16 divisors (see below), whose sum is σ = 276702910272. Its totient is φ = 122946871040.

The previous prime is 195972235187. The next prime is 195972235213. The reversal of 195972235197 is 791532279591.

It is a cyclic number.

It is not a de Polignac number, because 195972235197 - 2⁴ = 195972235181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195972235197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195972235117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147922 + ... + 643292.

It is an arithmetic number, because the mean of its divisors is an integer number (17293931892).

Almost surely, 2^195972235197 is an apocalyptic number.

195972235197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

195972235197 is a deficient number, since it is larger than the sum of its proper divisors (80730675075).

195972235197 is a wasteful number, since it uses less digits than its factorization.

195972235197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503148.

The product of its digits is 10716300, while the sum is 60.

The spelling of 195972235197 in words is "one hundred ninety-five billion, nine hundred seventy-two million, two hundred thirty-five thousand, one hundred ninety-seven".