13516789 has 18 divisors (see below), whose sum is σ = 16112418. Its totient is φ = 11325600.

The previous prime is 13516787. The next prime is 13516823. The reversal of 13516789 is 98761531.

It can be written as a sum of positive squares in 3 ways, for example, as 339889 + 13176900 = 583^2 + 3630^2 .

It is not a de Polignac number, because 13516789 - 2¹ = 13516787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13516787) 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 17 ways as a sum of consecutive naturals, for example, 20119 + ... + 20779.

Almost surely, 2^13516789 is an apocalyptic number.

It is an amenable number.

13516789 is a deficient number, since it is larger than the sum of its proper divisors (2595629).

13516789 is a wasteful number, since it uses less digits than its factorization.

13516789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709 (or 685 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 13516789 is about 3676.5185978042. The cubic root of 13516789 is about 238.2088238543.

The spelling of 13516789 in words is "thirteen million, five hundred sixteen thousand, seven hundred eighty-nine".