195358081 has 2 divisors, whose sum is σ = 195358082. Its totient is φ = 195358080.

The previous prime is 195358061. The next prime is 195358087. The reversal of 195358081 is 180853591.

195358081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193655056 + 1703025 = 13916^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 195358081 - 2¹¹ = 195356033 is a prime.

It is a super-2 number, since 2×195358081² = 76329559624005122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195358087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97679040 + 97679041.

It is an arithmetic number, because the mean of its divisors is an integer number (97679041).

Almost surely, 2^195358081 is an apocalyptic number.

It is an amenable number.

195358081 is a deficient number, since it is larger than the sum of its proper divisors (1).

195358081 is an equidigital number, since it uses as much as digits as its factorization.

195358081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 195358081 is about 13977.0555196722. The cubic root of 195358081 is about 580.2437352532.

The spelling of 195358081 in words is "one hundred ninety-five million, three hundred fifty-eight thousand, eighty-one".