195665012 has 24 divisors (see below), whose sum is σ = 346437000. Its totient is φ = 96690176.

The previous prime is 195665011. The next prime is 195665017. The reversal of 195665012 is 210566591.

It can be written as a sum of positive squares in 4 ways, for example, as 19412836 + 176252176 = 4406^2 + 13276^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195665011) 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, 138164 + ... + 139572.

It is an arithmetic number, because the mean of its divisors is an integer number (14434875).

Almost surely, 2^195665012 is an apocalyptic number.

It is an amenable number.

195665012 is a deficient number, since it is larger than the sum of its proper divisors (150771988).

195665012 is a wasteful number, since it uses less digits than its factorization.

195665012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795 (or 1793 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 195665012 is about 13988.0310265598. The cubic root of 195665012 is about 580.5474537734.

The spelling of 195665012 in words is "one hundred ninety-five million, six hundred sixty-five thousand, twelve".