19684384145489 has 8 divisors (see below), whose sum is σ = 22497091162368. Its totient is φ = 16871840163360.

The previous prime is 19684384145443. The next prime is 19684384145527. The reversal of 19684384145489 is 98454148348691.

It is a happy number.

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

It is not a de Polignac number, because 19684384145489 - 2²⁴ = 19684367368273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19684384115489) 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, 40499852 + ... + 40983005.

It is an arithmetic number, because the mean of its divisors is an integer number (2812136395296).

Almost surely, 2^{19684384145489} is an apocalyptic number.

It is an amenable number.

19684384145489 is a deficient number, since it is larger than the sum of its proper divisors (2812707016879).

19684384145489 is an equidigital number, since it uses as much as digits as its factorization.

19684384145489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81517375.

The product of its digits is 955514880, while the sum is 74.

The spelling of 19684384145489 in words is "nineteen trillion, six hundred eighty-four billion, three hundred eighty-four million, one hundred forty-five thousand, four hundred eighty-nine".