19674842619 has 4 divisors (see below), whose sum is σ = 26233123496. Its totient is φ = 13116561744.

The previous prime is 19674842533. The next prime is 19674842623. The reversal of 19674842619 is 91624847691.

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

It is not a de Polignac number, because 19674842619 - 2⁹ = 19674842107 is a prime.

It is a super-2 number, since 2×19674842619² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19674842659) 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, 3279140434 + ... + 3279140439.

It is an arithmetic number, because the mean of its divisors is an integer number (6558280874).

Almost surely, 2^19674842619 is an apocalyptic number.

19674842619 is a deficient number, since it is larger than the sum of its proper divisors (6558280877).

19674842619 is an equidigital number, since it uses as much as digits as its factorization.

19674842619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6558280876.

The product of its digits is 5225472, while the sum is 57.

The spelling of 19674842619 in words is "nineteen billion, six hundred seventy-four million, eight hundred forty-two thousand, six hundred nineteen".