13185173 has 2 divisors, whose sum is σ = 13185174. Its totient is φ = 13185172.

The previous prime is 13185167. The next prime is 13185191. The reversal of 13185173 is 37158131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13010449 + 174724 = 3607^2 + 418^2 .

It is an emirp because it is prime and its reverse (37158131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13185173 - 2⁴ = 13185157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13185103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6592586 + 6592587.

It is an arithmetic number, because the mean of its divisors is an integer number (6592587).

Almost surely, 2^13185173 is an apocalyptic number.

It is an amenable number.

13185173 is a deficient number, since it is larger than the sum of its proper divisors (1).

13185173 is an equidigital number, since it uses as much as digits as its factorization.

13185173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 29.

The square root of 13185173 is about 3631.1393528753. The cubic root of 13185173 is about 236.2446292742.

The spelling of 13185173 in words is "thirteen million, one hundred eighty-five thousand, one hundred seventy-three".