19719024229 has 4 divisors (see below), whose sum is σ = 20138577984. Its totient is φ = 19299470476.

The previous prime is 19719024223. The next prime is 19719024253. The reversal of 19719024229 is 92242091791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19719024229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19719024223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209776807 + ... + 209776900.

It is an arithmetic number, because the mean of its divisors is an integer number (5034644496).

Almost surely, 2^19719024229 is an apocalyptic number.

It is an amenable number.

19719024229 is a deficient number, since it is larger than the sum of its proper divisors (419553755).

19719024229 is an equidigital number, since it uses as much as digits as its factorization.

19719024229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419553754.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 19719024229 in words is "nineteen billion, seven hundred nineteen million, twenty-four thousand, two hundred twenty-nine".