19344827969 has 6 divisors (see below), whose sum is σ = 20549696454. Its totient is φ = 18206896640.

The previous prime is 19344827963. The next prime is 19344827981. The reversal of 19344827969 is 96972844391.

It can be written as a sum of positive squares in 3 ways, for example, as 13966512400 + 5378315569 = 118180^2 + 73337^2 .

It is not a de Polignac number, because 19344827969 - 2²⁸ = 19076392513 is a prime.

It is a super-2 number, since 2×19344827969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19344827963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33468272 + ... + 33468849.

It is an arithmetic number, because the mean of its divisors is an integer number (3424949409).

Almost surely, 2^19344827969 is an apocalyptic number.

It is an amenable number.

19344827969 is a deficient number, since it is larger than the sum of its proper divisors (1204868485).

19344827969 is an equidigital number, since it uses as much as digits as its factorization.

19344827969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66937155 (or 66937138 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 62.

The spelling of 19344827969 in words is "nineteen billion, three hundred forty-four million, eight hundred twenty-seven thousand, nine hundred sixty-nine".