195008069 has 2 divisors, whose sum is σ = 195008070. Its totient is φ = 195008068.

The previous prime is 195008027. The next prime is 195008081. The reversal of 195008069 is 960800591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183277444 + 11730625 = 13538^2 + 3425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195008069 is a prime.

It is a super-2 number, since 2×195008069² = 76056293950217522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195008089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97504034 + 97504035.

It is an arithmetic number, because the mean of its divisors is an integer number (97504035).

Almost surely, 2^195008069 is an apocalyptic number.

It is an amenable number.

195008069 is a deficient number, since it is larger than the sum of its proper divisors (1).

195008069 is an equidigital number, since it uses as much as digits as its factorization.

195008069 is an evil number, because the sum of its binary digits is even.

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

The square root of 195008069 is about 13964.5289573261. The cubic root of 195008069 is about 579.8969981577.

The spelling of 195008069 in words is "one hundred ninety-five million, eight thousand, sixty-nine".