195993207 has 6 divisors (see below), whose sum is σ = 283101312. Its totient is φ = 130662132.

The previous prime is 195993199. The next prime is 195993263. The reversal of 195993207 is 702399591.

It is a happy number.

It is not a de Polignac number, because 195993207 - 2³ = 195993199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195993307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10888503 + ... + 10888520.

It is an arithmetic number, because the mean of its divisors is an integer number (47183552).

Almost surely, 2^195993207 is an apocalyptic number.

195993207 is a deficient number, since it is larger than the sum of its proper divisors (87108105).

195993207 is a wasteful number, since it uses less digits than its factorization.

195993207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21777029 (or 21777026 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 195993207 is about 13999.7573907550. The cubic root of 195993207 is about 580.8718625507.

The spelling of 195993207 in words is "one hundred ninety-five million, nine hundred ninety-three thousand, two hundred seven".