19383919213 has 4 divisors (see below), whose sum is σ = 19482314940. Its totient is φ = 19285523488.

The previous prime is 19383919201. The next prime is 19383919223. The reversal of 19383919213 is 31291938391.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10750164489 + 8633754724 = 103683^2 + 92918^2 .

It is a cyclic number.

It is not a de Polignac number, because 19383919213 - 2¹³ = 19383911021 is a prime.

It is a super-2 number, since 2×19383919213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19383919223) 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 3 ways as a sum of consecutive naturals, for example, 49197568 + ... + 49197961.

It is an arithmetic number, because the mean of its divisors is an integer number (4870578735).

Almost surely, 2^19383919213 is an apocalyptic number.

It is an amenable number.

19383919213 is a deficient number, since it is larger than the sum of its proper divisors (98395727).

19383919213 is an equidigital number, since it uses as much as digits as its factorization.

19383919213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98395726.

The product of its digits is 314928, while the sum is 49.

The spelling of 19383919213 in words is "nineteen billion, three hundred eighty-three million, nine hundred nineteen thousand, two hundred thirteen".