19838871311 has 8 divisors (see below), whose sum is σ = 22674084480. Its totient is φ = 17003930328.

The previous prime is 19838871301. The next prime is 19838871323. The reversal of 19838871311 is 11317883891.

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

It is not a de Polignac number, because 19838871311 - 2¹⁴ = 19838854927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19838871311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19838871301) 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, 124460 + ... + 234878.

It is an arithmetic number, because the mean of its divisors is an integer number (2834260560).

Almost surely, 2^19838871311 is an apocalyptic number.

19838871311 is a deficient number, since it is larger than the sum of its proper divisors (2835213169).

19838871311 is a wasteful number, since it uses less digits than its factorization.

19838871311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136093.

The product of its digits is 290304, while the sum is 50.

The spelling of 19838871311 in words is "nineteen billion, eight hundred thirty-eight million, eight hundred seventy-one thousand, three hundred eleven".