195938961 has 4 divisors (see below), whose sum is σ = 261251952. Its totient is φ = 130625972.

The previous prime is 195938921. The next prime is 195938971. The reversal of 195938961 is 169839591.

It is a happy number.

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: 169839591 = 3 ⋅56613197.

It is a cyclic number.

It is not a de Polignac number, because 195938961 - 2⁷ = 195938833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195938921) 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, 32656491 + ... + 32656496.

It is an arithmetic number, because the mean of its divisors is an integer number (65312988).

Almost surely, 2^195938961 is an apocalyptic number.

It is an amenable number.

195938961 is a deficient number, since it is larger than the sum of its proper divisors (65312991).

195938961 is an equidigital number, since it uses as much as digits as its factorization.

195938961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65312990.

The product of its digits is 524880, while the sum is 51.

The square root of 195938961 is about 13997.8198659648. The cubic root of 195938961 is about 580.8182673555.

The spelling of 195938961 in words is "one hundred ninety-five million, nine hundred thirty-eight thousand, nine hundred sixty-one".