19430966369 has 8 divisors (see below), whose sum is σ = 20031681768. Its totient is φ = 18836288640.

The previous prime is 19430966299. The next prime is 19430966383. The reversal of 19430966369 is 96366903491.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2087393344 + 17343573025 = 45688^2 + 131695^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 19430966369 - 2²⁸ = 19162530913 is a prime.

It is a super-2 number, since 2×19430966369² (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 (19430966069) 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, 1502882 + ... + 1515755.

It is an arithmetic number, because the mean of its divisors is an integer number (2503960221).

Almost surely, 2^19430966369 is an apocalyptic number.

It is an amenable number.

19430966369 is a deficient number, since it is larger than the sum of its proper divisors (600715399).

19430966369 is a wasteful number, since it uses less digits than its factorization.

19430966369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3018835.

The product of its (nonzero) digits is 5668704, while the sum is 56.

The spelling of 19430966369 in words is "nineteen billion, four hundred thirty million, nine hundred sixty-six thousand, three hundred sixty-nine".