195169 has 4 divisors (see below), whose sum is σ = 210196. Its totient is φ = 180144.

The previous prime is 195163. The next prime is 195193. The reversal of 195169 is 961591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961591 = 233 ⋅4127.

It can be written as a sum of positive squares in 2 ways, for example, as 82944 + 112225 = 288^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 195169 - 2³ = 195161 is a prime.

It is a super-2 number, since 2×195169² = 76181877122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195169.

It is not an unprimeable number, because it can be changed into a prime (195161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7494 + ... + 7519.

It is an arithmetic number, because the mean of its divisors is an integer number (52549).

2¹⁹⁵¹⁶⁹ is an apocalyptic number.

It is an amenable number.

195169 is a deficient number, since it is larger than the sum of its proper divisors (15027).

195169 is a wasteful number, since it uses less digits than its factorization.

195169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15026.

The product of its digits is 2430, while the sum is 31.

The square root of 195169 is about 441.7793566929. The cubic root of 195169 is about 58.0056474881.

The spelling of 195169 in words is "one hundred ninety-five thousand, one hundred sixty-nine".