195181983 has 18 divisors (see below), whose sum is σ = 291330312. Its totient is φ = 125918280.

The previous prime is 195181957. The next prime is 195181997. The reversal of 195181983 is 389181591.

It is not a de Polignac number, because 195181983 - 2⁵ = 195181951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195182983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2635 + ... + 19932.

Almost surely, 2^195181983 is an apocalyptic number.

195181983 is a deficient number, since it is larger than the sum of its proper divisors (96148329).

195181983 is a wasteful number, since it uses less digits than its factorization.

195181983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22635 (or 22601 counting only the distinct ones).

The product of its digits is 77760, while the sum is 45.

The square root of 195181983 is about 13970.7545608675. The cubic root of 195181983 is about 580.0693367365.

The spelling of 195181983 in words is "one hundred ninety-five million, one hundred eighty-one thousand, nine hundred eighty-three".