13819189 has 2 divisors, whose sum is σ = 13819190. Its totient is φ = 13819188.

The previous prime is 13819187. The next prime is 13819199. The reversal of 13819189 is 98191831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13264164 + 555025 = 3642^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 13819189 - 2¹ = 13819187 is a prime.

Together with 13819187, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13819187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6909594 + 6909595.

It is an arithmetic number, because the mean of its divisors is an integer number (6909595).

Almost surely, 2^13819189 is an apocalyptic number.

It is an amenable number.

13819189 is a deficient number, since it is larger than the sum of its proper divisors (1).

13819189 is an equidigital number, since it uses as much as digits as its factorization.

13819189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 40.

The square root of 13819189 is about 3717.4169795706. The cubic root of 13819189 is about 239.9721553344.

The spelling of 13819189 in words is "thirteen million, eight hundred nineteen thousand, one hundred eighty-nine".