195692089 has 4 divisors (see below), whose sum is σ = 196569856. Its totient is φ = 194814324.

The previous prime is 195692051. The next prime is 195692099. The reversal of 195692089 is 980296591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 980296591 = 2161 ⋅453631.

It is a cyclic number.

It is not a de Polignac number, because 195692089 - 2⁷ = 195691961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195692099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438549 + ... + 438994.

It is an arithmetic number, because the mean of its divisors is an integer number (49142464).

Almost surely, 2^195692089 is an apocalyptic number.

It is an amenable number.

195692089 is a deficient number, since it is larger than the sum of its proper divisors (877767).

195692089 is an equidigital number, since it uses as much as digits as its factorization.

195692089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877766.

The product of its (nonzero) digits is 349920, while the sum is 49.

The square root of 195692089 is about 13988.9988562441. The cubic root of 195692089 is about 580.5742321231.

The spelling of 195692089 in words is "one hundred ninety-five million, six hundred ninety-two thousand, eighty-nine".