19769319369 has 6 divisors (see below), whose sum is σ = 28555683546. Its totient is φ = 13179546240.

The previous prime is 19769319313. The next prime is 19769319389. The reversal of 19769319369 is 96391396791.

It can be written as a sum of positive squares in only one way, i.e., 16409610000 + 3359709369 = 128100^2 + 57963^2 .

It is not a de Polignac number, because 19769319369 - 2¹² = 19769315273 is a prime.

It is a super-2 number, since 2×19769319369² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19769319389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1098295512 + ... + 1098295529.

It is an arithmetic number, because the mean of its divisors is an integer number (4759280591).

Almost surely, 2^19769319369 is an apocalyptic number.

It is an amenable number.

19769319369 is a deficient number, since it is larger than the sum of its proper divisors (8786364177).

19769319369 is a wasteful number, since it uses less digits than its factorization.

19769319369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196591047 (or 2196591044 counting only the distinct ones).

The product of its digits is 14880348, while the sum is 63.

The spelling of 19769319369 in words is "nineteen billion, seven hundred sixty-nine million, three hundred nineteen thousand, three hundred sixty-nine".