16844731749 has 6 divisors (see below), whose sum is σ = 24331279206. Its totient is φ = 11229821160.

The previous prime is 16844731699. The next prime is 16844731817. The reversal of 16844731749 is 94713744861.

It is a happy number.

16844731749 is a `hidden beast` number, since 168 + 4 + 473 + 1 + 7 + 4 + 9 = 666.

16844731749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12301028100 + 4543703649 = 110910^2 + 67407^2 .

It is not a de Polignac number, because 16844731749 - 2²³ = 16836343141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16844731695 and 16844731704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16844733749) 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 5 ways as a sum of consecutive naturals, for example, 935818422 + ... + 935818439.

It is an arithmetic number, because the mean of its divisors is an integer number (4055213201).

Almost surely, 2^16844731749 is an apocalyptic number.

It is an amenable number.

16844731749 is a deficient number, since it is larger than the sum of its proper divisors (7486547457).

16844731749 is a wasteful number, since it uses less digits than its factorization.

16844731749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871636867 (or 1871636864 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 16844731749 in words is "sixteen billion, eight hundred forty-four million, seven hundred thirty-one thousand, seven hundred forty-nine".