19364972319226 has 12 divisors (see below), whose sum is σ = 30856642744878. Its totient is φ = 9112928149952.

The previous prime is 19364972319211. The next prime is 19364972319257. The reversal of 19364972319226 is 62291327946391.

It is a Cunningham number, because it is equal to 4400565²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 19364972319225 + 1 = 4400565^2 + 1^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16751705581 + ... + 16751706736.

Almost surely, 2^{19364972319226} is an apocalyptic number.

19364972319226 is a deficient number, since it is larger than the sum of its proper divisors (11491670425652).

19364972319226 is a wasteful number, since it uses less digits than its factorization.

19364972319226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33503412353 (or 33503412336 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 64.

The spelling of 19364972319226 in words is "nineteen trillion, three hundred sixty-four billion, nine hundred seventy-two million, three hundred nineteen thousand, two hundred twenty-six".