195171664 has 10 divisors (see below), whose sum is σ = 378145130. Its totient is φ = 97585824.

The previous prime is 195171661. The next prime is 195171677. The reversal of 195171664 is 466171591.

It can be written as a sum of positive squares in only one way, i.e., 144192064 + 50979600 = 12008^2 + 7140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195171661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6099099 + ... + 6099130.

It is an arithmetic number, because the mean of its divisors is an integer number (37814513).

Almost surely, 2^195171664 is an apocalyptic number.

It is an amenable number.

195171664 is a deficient number, since it is larger than the sum of its proper divisors (182973466).

195171664 is a wasteful number, since it uses less digits than its factorization.

195171664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12198237 (or 12198231 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 195171664 is about 13970.3852488040. The cubic root of 195171664 is about 580.0591140700.

The spelling of 195171664 in words is "one hundred ninety-five million, one hundred seventy-one thousand, six hundred sixty-four".