1991741424196 has 12 divisors (see below), whose sum is σ = 3486122044048. Its totient is φ = 995706554472.

The previous prime is 1991741424161. The next prime is 1991741424287. The reversal of 1991741424196 is 6914241471991.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1991741424196.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41012106 + ... + 41060641.

Almost surely, 2^{1991741424196} is an apocalyptic number.

It is an amenable number.

1991741424196 is a deficient number, since it is larger than the sum of its proper divisors (1494380619852).

1991741424196 is a wasteful number, since it uses less digits than its factorization.

1991741424196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82078818 (or 82078816 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 58.

The spelling of 1991741424196 in words is "one trillion, nine hundred ninety-one billion, seven hundred forty-one million, four hundred twenty-four thousand, one hundred ninety-six".