19022781419 has 4 divisors (see below), whose sum is σ = 19849858896. Its totient is φ = 18195703944.

The previous prime is 19022781389. The next prime is 19022781433. The reversal of 19022781419 is 91418722091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91418722091 = 19 ⋅4811511689.

It is a cyclic number.

It is not a de Polignac number, because 19022781419 - 2⁸ = 19022781163 is a prime.

It is a super-2 number, since 2×19022781419² (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 19022781419.

It is not an unprimeable number, because it can be changed into a prime (19022781319) 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, 413538704 + ... + 413538749.

It is an arithmetic number, because the mean of its divisors is an integer number (4962464724).

Almost surely, 2^19022781419 is an apocalyptic number.

19022781419 is a deficient number, since it is larger than the sum of its proper divisors (827077477).

19022781419 is an equidigital number, since it uses as much as digits as its factorization.

19022781419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827077476.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 19022781419 in words is "nineteen billion, twenty-two million, seven hundred eighty-one thousand, four hundred nineteen".