195888943 has 4 divisors (see below), whose sum is σ = 207411840. Its totient is φ = 184366048.

The previous prime is 195888923. The next prime is 195888949. The reversal of 195888943 is 349888591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195888943 - 2¹⁷ = 195757871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195888949) 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, 5761423 + ... + 5761456.

It is an arithmetic number, because the mean of its divisors is an integer number (51852960).

Almost surely, 2^195888943 is an apocalyptic number.

195888943 is a deficient number, since it is larger than the sum of its proper divisors (11522897).

195888943 is a wasteful number, since it uses less digits than its factorization.

195888943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11522896.

The product of its digits is 2488320, while the sum is 55.

The square root of 195888943 is about 13996.0331165656. The cubic root of 195888943 is about 580.7688406696.

The spelling of 195888943 in words is "one hundred ninety-five million, eight hundred eighty-eight thousand, nine hundred forty-three".