19139827759 has 4 divisors (see below), whose sum is σ = 20612122216. Its totient is φ = 17667533304.

The previous prime is 19139827709. The next prime is 19139827771. The reversal of 19139827759 is 95772893191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95772893191 = 19 ⋅5040678589.

It is a cyclic number.

It is not a de Polignac number, because 19139827759 - 2²¹ = 19137730607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19139827697 and 19139827706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19139827709) 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, 736147209 + ... + 736147234.

It is an arithmetic number, because the mean of its divisors is an integer number (5153030554).

Almost surely, 2^19139827759 is an apocalyptic number.

19139827759 is a deficient number, since it is larger than the sum of its proper divisors (1472294457).

19139827759 is a wasteful number, since it uses less digits than its factorization.

19139827759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472294456.

The product of its digits is 8573040, while the sum is 61.

The spelling of 19139827759 in words is "nineteen billion, one hundred thirty-nine million, eight hundred twenty-seven thousand, seven hundred fifty-nine".