19823396636 has 6 divisors (see below), whose sum is σ = 34690944120. Its totient is φ = 9911698316.

The previous prime is 19823396627. The next prime is 19823396683. The reversal of 19823396636 is 63669332891.

It is a super-2 number, since 2×19823396636² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2477924576 + ... + 2477924583.

It is an arithmetic number, because the mean of its divisors is an integer number (5781824020).

Almost surely, 2^19823396636 is an apocalyptic number.

It is an amenable number.

19823396636 is a deficient number, since it is larger than the sum of its proper divisors (14867547484).

19823396636 is a wasteful number, since it uses less digits than its factorization.

19823396636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4955849163 (or 4955849161 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 56.

The spelling of 19823396636 in words is "nineteen billion, eight hundred twenty-three million, three hundred ninety-six thousand, six hundred thirty-six".