16143926549 has 4 divisors (see below), whose sum is σ = 16170092364. Its totient is φ = 16117760736.

The previous prime is 16143926503. The next prime is 16143926551. The reversal of 16143926549 is 94562934161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94562934161 = 31 ⋅3050417231.

It can be written as a sum of positive squares in 2 ways, for example, as 3160463524 + 12983463025 = 56218^2 + 113945^2 .

It is a cyclic number.

It is not a de Polignac number, because 16143926549 - 2²⁴ = 16127149333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16143926497 and 16143926506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16143926569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13081982 + ... + 13083215.

It is an arithmetic number, because the mean of its divisors is an integer number (4042523091).

Almost surely, 2^16143926549 is an apocalyptic number.

It is an amenable number.

16143926549 is a deficient number, since it is larger than the sum of its proper divisors (26165815).

16143926549 is an equidigital number, since it uses as much as digits as its factorization.

16143926549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26165814.

The product of its digits is 1399680, while the sum is 50.

The spelling of 16143926549 in words is "sixteen billion, one hundred forty-three million, nine hundred twenty-six thousand, five hundred forty-nine".