19119214399 has 4 divisors (see below), whose sum is σ = 19563847336. Its totient is φ = 18674581464.

The previous prime is 19119214369. The next prime is 19119214427. The reversal of 19119214399 is 99341291191.

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 19119214399 - 2³³ = 10529279807 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 (19119214369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222316404 + ... + 222316489.

It is an arithmetic number, because the mean of its divisors is an integer number (4890961834).

Almost surely, 2^19119214399 is an apocalyptic number.

19119214399 is a deficient number, since it is larger than the sum of its proper divisors (444632937).

19119214399 is an equidigital number, since it uses as much as digits as its factorization.

19119214399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444632936.

The product of its digits is 157464, while the sum is 49.

The spelling of 19119214399 in words is "nineteen billion, one hundred nineteen million, two hundred fourteen thousand, three hundred ninety-nine".