13165109 has 4 divisors (see below), whose sum is σ = 13233516. Its totient is φ = 13096704.

The previous prime is 13165099. The next prime is 13165121. The reversal of 13165109 is 90156131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90156131 = 13 ⋅6935087.

It can be written as a sum of positive squares in 2 ways, for example, as 3880900 + 9284209 = 1970^2 + 3047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13165109 is a prime.

It is a super-3 number, since 3×13165109³ (a number of 22 digits) contains 333 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 (13165189) 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 3 ways as a sum of consecutive naturals, for example, 33914 + ... + 34299.

It is an arithmetic number, because the mean of its divisors is an integer number (3308379).

Almost surely, 2^13165109 is an apocalyptic number.

It is an amenable number.

13165109 is a deficient number, since it is larger than the sum of its proper divisors (68407).

13165109 is an equidigital number, since it uses as much as digits as its factorization.

13165109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68406.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 13165109 is about 3628.3755318324. The cubic root of 13165109 is about 236.1247365588.

The spelling of 13165109 in words is "thirteen million, one hundred sixty-five thousand, one hundred nine".