195188842 has 4 divisors (see below), whose sum is σ = 292783266. Its totient is φ = 97594420.

The previous prime is 195188839. The next prime is 195188857. The reversal of 195188842 is 248881591.

It is a happy number.

It is a Cunningham number, because it is equal to 13971²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 195188841 + 1 = 13971^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 195188792 and 195188801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48797209 + ... + 48797212.

Almost surely, 2^195188842 is an apocalyptic number.

195188842 is a deficient number, since it is larger than the sum of its proper divisors (97594424).

195188842 is an equidigital number, since it uses as much as digits as its factorization.

195188842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97594423.

The product of its digits is 184320, while the sum is 46.

The square root of 195188842 is about 13971.0000357884. Note that the first 4 decimals coincide. The cubic root of 195188842 is about 580.0761315047.

The spelling of 195188842 in words is "one hundred ninety-five million, one hundred eighty-eight thousand, eight hundred forty-two".