195804049 has 9 divisors (see below), whose sum is σ = 227886057. Its totient is φ = 167748084.

The previous prime is 195804047. The next prime is 195804053. The reversal of 195804049 is 940408591.

The square root of 195804049 is 13993.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 195804049 - 2¹ = 195804047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195804047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 96952 + ... + 98950.

It is an arithmetic number, because the mean of its divisors is an integer number (25320673).

Almost surely, 2^195804049 is an apocalyptic number.

195804049 is the 13993-rd square number.

195804049 is the 6997-th centered octagonal number.

It is an amenable number.

195804049 is a deficient number, since it is larger than the sum of its proper divisors (32082008).

195804049 is an frugal number, since it uses more digits than its factorization.

195804049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The cubic root of 195804049 is about 580.6849310261.

The spelling of 195804049 in words is "one hundred ninety-five million, eight hundred four thousand, forty-nine".