196643133842 has 4 divisors (see below), whose sum is σ = 294964700766. Its totient is φ = 98321566920.

The previous prime is 196643133721. The next prime is 196643133859. The reversal of 196643133842 is 248331346691.

196643133842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 194093994721 + 2549139121 = 440561^2 + 50489^2 .

It is a super-3 number, since 3×196643133842³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 49160783459 + ... + 49160783462.

Almost surely, 2^196643133842 is an apocalyptic number.

196643133842 is a deficient number, since it is larger than the sum of its proper divisors (98321566924).

196643133842 is an equidigital number, since it uses as much as digits as its factorization.

196643133842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98321566923.

The product of its digits is 2239488, while the sum is 50.

The spelling of 196643133842 in words is "one hundred ninety-six billion, six hundred forty-three million, one hundred thirty-three thousand, eight hundred forty-two".