195921963 has 8 divisors (see below), whose sum is σ = 290254800. Its totient is φ = 130614624.

The previous prime is 195921937. The next prime is 195922007. The reversal of 195921963 is 369129591.

It is a happy number.

195921963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 195921963 - 2⁵ = 195921931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195921763) 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, 3628158 + ... + 3628211.

It is an arithmetic number, because the mean of its divisors is an integer number (36281850).

Almost surely, 2^195921963 is an apocalyptic number.

195921963 is a deficient number, since it is larger than the sum of its proper divisors (94332837).

195921963 is an equidigital number, since it uses as much as digits as its factorization.

195921963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7256378 (or 7256372 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 195921963 is about 13997.2126868173. The cubic root of 195921963 is about 580.8014712499.

The spelling of 195921963 in words is "one hundred ninety-five million, nine hundred twenty-one thousand, nine hundred sixty-three".