13185539 has 2 divisors, whose sum is σ = 13185540. Its totient is φ = 13185538.

The previous prime is 13185493. The next prime is 13185547. The reversal of 13185539 is 93558131.

It is a strong prime.

It is an emirp because it is prime and its reverse (93558131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13185539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13185499 and 13185508.

It is not a weakly prime, because it can be changed into another prime (13185589) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6592769 + 6592770.

It is an arithmetic number, because the mean of its divisors is an integer number (6592770).

Almost surely, 2^13185539 is an apocalyptic number.

13185539 is a deficient number, since it is larger than the sum of its proper divisors (1).

13185539 is an equidigital number, since it uses as much as digits as its factorization.

13185539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 13185539 is about 3631.1897499305. The cubic root of 13185539 is about 236.2468151825.

The spelling of 13185539 in words is "thirteen million, one hundred eighty-five thousand, five hundred thirty-nine".