13145189 has 2 divisors, whose sum is σ = 13145190. Its totient is φ = 13145188.

The previous prime is 13145179. The next prime is 13145201. The reversal of 13145189 is 98154131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13082689 + 62500 = 3617^2 + 250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13145189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13145159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6572594 + 6572595.

It is an arithmetic number, because the mean of its divisors is an integer number (6572595).

Almost surely, 2^13145189 is an apocalyptic number.

It is an amenable number.

13145189 is a deficient number, since it is larger than the sum of its proper divisors (1).

13145189 is an equidigital number, since it uses as much as digits as its factorization.

13145189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 32.

The square root of 13145189 is about 3625.6294625899. The cubic root of 13145189 is about 236.0055837518.

The spelling of 13145189 in words is "thirteen million, one hundred forty-five thousand, one hundred eighty-nine".