19213830719 has 4 divisors (see below), whose sum is σ = 19258204896. Its totient is φ = 19169456544.

The previous prime is 19213830707. The next prime is 19213830733. The reversal of 19213830719 is 91703831291.

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

It is a cyclic number.

It is not a de Polignac number, because 19213830719 - 2³² = 14918863423 is a prime.

It is a super-2 number, since 2×19213830719² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19213830719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19213830749) 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, 22186439 + ... + 22187304.

It is an arithmetic number, because the mean of its divisors is an integer number (4814551224).

Almost surely, 2^19213830719 is an apocalyptic number.

19213830719 is a deficient number, since it is larger than the sum of its proper divisors (44374177).

19213830719 is an equidigital number, since it uses as much as digits as its factorization.

19213830719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44374176.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 19213830719 in words is "nineteen billion, two hundred thirteen million, eight hundred thirty thousand, seven hundred nineteen".