19039707469 has 4 divisors (see below), whose sum is σ = 19504090620. Its totient is φ = 18575324320.

The previous prime is 19039707451. The next prime is 19039707497. The reversal of 19039707469 is 96470793091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96470793091 = 16631 ⋅5800661.

It can be written as a sum of positive squares in 2 ways, for example, as 5823216100 + 13216491369 = 76310^2 + 114963^2 .

It is a cyclic number.

It is not a de Polignac number, because 19039707469 - 2⁹ = 19039706957 is a prime.

It is a super-2 number, since 2×19039707469² (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 (19039707409) 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, 232191514 + ... + 232191595.

It is an arithmetic number, because the mean of its divisors is an integer number (4876022655).

Almost surely, 2^19039707469 is an apocalyptic number.

It is an amenable number.

19039707469 is a deficient number, since it is larger than the sum of its proper divisors (464383151).

19039707469 is an equidigital number, since it uses as much as digits as its factorization.

19039707469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464383150.

The product of its (nonzero) digits is 2571912, while the sum is 55.

The spelling of 19039707469 in words is "nineteen billion, thirty-nine million, seven hundred seven thousand, four hundred sixty-nine".