195905963 has 8 divisors (see below), whose sum is σ = 215832816. Its totient is φ = 176332000.

The previous prime is 195905947. The next prime is 195905981. The reversal of 195905963 is 369509591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195905963 - 2⁴ = 195905947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195905993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87056 + ... + 89277.

It is an arithmetic number, because the mean of its divisors is an integer number (26979102).

Almost surely, 2^195905963 is an apocalyptic number.

195905963 is a deficient number, since it is larger than the sum of its proper divisors (19926853).

195905963 is a wasteful number, since it uses less digits than its factorization.

195905963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176445.

The product of its (nonzero) digits is 328050, while the sum is 47.

The square root of 195905963 is about 13996.6411327861. The cubic root of 195905963 is about 580.7856604030.

The spelling of 195905963 in words is "one hundred ninety-five million, nine hundred five thousand, nine hundred sixty-three".