19989351219 has 8 divisors (see below), whose sum is σ = 27272293312. Its totient is φ = 13016321640.

The previous prime is 19989351181. The next prime is 19989351241. The reversal of 19989351219 is 91215398991.

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

It is not a de Polignac number, because 19989351219 - 2¹² = 19989347123 is a prime.

It is a super-2 number, since 2×19989351219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19989351619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77477977 + ... + 77478234.

It is an arithmetic number, because the mean of its divisors is an integer number (3409036664).

Almost surely, 2^19989351219 is an apocalyptic number.

19989351219 is a deficient number, since it is larger than the sum of its proper divisors (7282942093).

19989351219 is a wasteful number, since it uses less digits than its factorization.

19989351219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154956257.

The product of its digits is 1574640, while the sum is 57.

The spelling of 19989351219 in words is "nineteen billion, nine hundred eighty-nine million, three hundred fifty-one thousand, two hundred nineteen".