19807684364 has 48 divisors (see below), whose sum is σ = 39059908608. Its totient is φ = 8720509248.

The previous prime is 19807684363. The next prime is 19807684397. The reversal of 19807684364 is 46348670891.

It is not an unprimeable number, because it can be changed into a prime (19807684363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416369 + ... + 461495.

It is an arithmetic number, because the mean of its divisors is an integer number (813748096).

Almost surely, 2^19807684364 is an apocalyptic number.

It is an amenable number.

19807684364 is a deficient number, since it is larger than the sum of its proper divisors (19252224244).

19807684364 is a wasteful number, since it uses less digits than its factorization.

19807684364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45534 (or 45532 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 19807684364 in words is "nineteen billion, eight hundred seven million, six hundred eighty-four thousand, three hundred sixty-four".