19962806368 has 48 divisors (see below), whose sum is σ = 39714554880. Its totient is φ = 9877046400.

The previous prime is 19962806363. The next prime is 19962806371. The reversal of 19962806368 is 86360826991.

It is a super-2 number, since 2×19962806368² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19962806363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376113 + ... + 1390543.

It is an arithmetic number, because the mean of its divisors is an integer number (827386560).

Almost surely, 2^19962806368 is an apocalyptic number.

It is an amenable number.

19962806368 is a deficient number, since it is larger than the sum of its proper divisors (19751748512).

19962806368 is a wasteful number, since it uses less digits than its factorization.

19962806368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14891 (or 14883 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 58.

The spelling of 19962806368 in words is "nineteen billion, nine hundred sixty-two million, eight hundred six thousand, three hundred sixty-eight".