19369936823 has 4 divisors (see below), whose sum is σ = 19379003040. Its totient is φ = 19360870608.

The previous prime is 19369936811. The next prime is 19369936843. The reversal of 19369936823 is 32863996391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32863996391 = 30047 ⋅1093753.

It is a cyclic number.

It is not a de Polignac number, because 19369936823 - 2⁶ = 19369936759 is a prime.

It is a super-2 number, since 2×19369936823² (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 (19369936843) 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, 4529903 + ... + 4534176.

It is an arithmetic number, because the mean of its divisors is an integer number (4844750760).

Almost surely, 2^19369936823 is an apocalyptic number.

19369936823 is a deficient number, since it is larger than the sum of its proper divisors (9066217).

19369936823 is an equidigital number, since it uses as much as digits as its factorization.

19369936823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9066216.

The product of its digits is 11337408, while the sum is 59.

The spelling of 19369936823 in words is "nineteen billion, three hundred sixty-nine million, nine hundred thirty-six thousand, eight hundred twenty-three".