195690069 has 6 divisors (see below), whose sum is σ = 282663446. Its totient is φ = 130460040.

The previous prime is 195690037. The next prime is 195690083. The reversal of 195690069 is 960096591.

It can be written as a sum of positive squares in only one way, i.e., 141491025 + 54199044 = 11895^2 + 7362^2 .

It is not a de Polignac number, because 195690069 - 2⁵ = 195690037 is a prime.

It is a super-2 number, since 2×195690069² = 76589206210449522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195690029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10871662 + ... + 10871679.

Almost surely, 2^195690069 is an apocalyptic number.

It is an amenable number.

195690069 is a deficient number, since it is larger than the sum of its proper divisors (86973377).

195690069 is a wasteful number, since it uses less digits than its factorization.

195690069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21743347 (or 21743344 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 195690069 is about 13988.9266564665. The cubic root of 195690069 is about 580.5722344883.

The spelling of 195690069 in words is "one hundred ninety-five million, six hundred ninety thousand, sixty-nine".