19984711139 has 8 divisors (see below), whose sum is σ = 20485755360. Its totient is φ = 19484315200.

The previous prime is 19984711129. The next prime is 19984711141. The reversal of 19984711139 is 93111748991.

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

It is not a de Polignac number, because 19984711139 - 2²⁰ = 19983662563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19984711129) 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, 99344 + ... + 223245.

It is an arithmetic number, because the mean of its divisors is an integer number (2560719420).

Almost surely, 2^19984711139 is an apocalyptic number.

19984711139 is a deficient number, since it is larger than the sum of its proper divisors (501044221).

19984711139 is a wasteful number, since it uses less digits than its factorization.

19984711139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324141.

The product of its digits is 489888, while the sum is 53.

The spelling of 19984711139 in words is "nineteen billion, nine hundred eighty-four million, seven hundred eleven thousand, one hundred thirty-nine".