13445189 has 2 divisors, whose sum is σ = 13445190. Its totient is φ = 13445188.

The previous prime is 13445167. The next prime is 13445203. The reversal of 13445189 is 98154431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10452289 + 2992900 = 3233^2 + 1730^2 .

It is an emirp because it is prime and its reverse (98154431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13445189 - 2⁸ = 13444933 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 (13445119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722594 + 6722595.

It is an arithmetic number, because the mean of its divisors is an integer number (6722595).

Almost surely, 2^13445189 is an apocalyptic number.

It is an amenable number.

13445189 is a deficient number, since it is larger than the sum of its proper divisors (1).

13445189 is an equidigital number, since it uses as much as digits as its factorization.

13445189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 13445189 is about 3666.7681955640. The cubic root of 13445189 is about 237.7874723987.

The spelling of 13445189 in words is "thirteen million, four hundred forty-five thousand, one hundred eighty-nine".