19136821339 has 8 divisors (see below), whose sum is σ = 19803863520. Its totient is φ = 18470256000.

The previous prime is 19136821321. The next prime is 19136821343. The reversal of 19136821339 is 93312863191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19136821339 - 2⁷ = 19136821211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19136821309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36567 + ... + 199024.

It is an arithmetic number, because the mean of its divisors is an integer number (2475482940).

Almost surely, 2^19136821339 is an apocalyptic number.

19136821339 is a deficient number, since it is larger than the sum of its proper divisors (667042181).

19136821339 is a wasteful number, since it uses less digits than its factorization.

19136821339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238421.

The product of its digits is 209952, while the sum is 46.

The spelling of 19136821339 in words is "nineteen billion, one hundred thirty-six million, eight hundred twenty-one thousand, three hundred thirty-nine".