19863782049 has 8 divisors (see below), whose sum is σ = 27131019552. Its totient is φ = 12919532960.

The previous prime is 19863781999. The next prime is 19863782063. The reversal of 19863782049 is 94028736891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19863782049 - 2⁷ = 19863781921 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19863782049.

It is not an unprimeable number, because it can be changed into a prime (19863780049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80746959 + ... + 80747204.

It is an arithmetic number, because the mean of its divisors is an integer number (3391377444).

Almost surely, 2^19863782049 is an apocalyptic number.

It is an amenable number.

19863782049 is a deficient number, since it is larger than the sum of its proper divisors (7267237503).

19863782049 is a wasteful number, since it uses less digits than its factorization.

19863782049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161494207.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 19863782049 in words is "nineteen billion, eight hundred sixty-three million, seven hundred eighty-two thousand, forty-nine".