19129932719 has 4 divisors (see below), whose sum is σ = 19162192896. Its totient is φ = 19097672544.

The previous prime is 19129932709. The next prime is 19129932727. The reversal of 19129932719 is 91723992191.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19129932719 is a prime.

It is a super-2 number, since 2×19129932719² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19129932709) 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, 16129199 + ... + 16130384.

It is an arithmetic number, because the mean of its divisors is an integer number (4790548224).

Almost surely, 2^19129932719 is an apocalyptic number.

19129932719 is a deficient number, since it is larger than the sum of its proper divisors (32260177).

19129932719 is an equidigital number, since it uses as much as digits as its factorization.

19129932719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32260176.

The product of its digits is 551124, while the sum is 53.

The spelling of 19129932719 in words is "nineteen billion, one hundred twenty-nine million, nine hundred thirty-two thousand, seven hundred nineteen".