195329081 has 2 divisors, whose sum is σ = 195329082. Its totient is φ = 195329080.

The previous prime is 195329077. The next prime is 195329089. The reversal of 195329081 is 180923591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182790400 + 12538681 = 13520^2 + 3541^2 .

It is a cyclic number.

It is not a de Polignac number, because 195329081 - 2² = 195329077 is a prime.

It is a super-2 number, since 2×195329081² = 76306899768609122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (195329089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97664540 + 97664541.

It is an arithmetic number, because the mean of its divisors is an integer number (97664541).

Almost surely, 2^195329081 is an apocalyptic number.

It is an amenable number.

195329081 is a deficient number, since it is larger than the sum of its proper divisors (1).

195329081 is an equidigital number, since it uses as much as digits as its factorization.

195329081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 195329081 is about 13976.0180666741. The cubic root of 195329081 is about 580.2150223364.

The spelling of 195329081 in words is "one hundred ninety-five million, three hundred twenty-nine thousand, eighty-one".