13820189 has 2 divisors, whose sum is σ = 13820190. Its totient is φ = 13820188.

The previous prime is 13820179. The next prime is 13820237. The reversal of 13820189 is 98102831.

13820189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11276164 + 2544025 = 3358^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 13820189 - 2⁴ = 13820173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13820179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6910094 + 6910095.

It is an arithmetic number, because the mean of its divisors is an integer number (6910095).

Almost surely, 2^13820189 is an apocalyptic number.

It is an amenable number.

13820189 is a deficient number, since it is larger than the sum of its proper divisors (1).

13820189 is an equidigital number, since it uses as much as digits as its factorization.

13820189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 13820189 is about 3717.5514791325. The cubic root of 13820189 is about 239.9779435749.

The spelling of 13820189 in words is "thirteen million, eight hundred twenty thousand, one hundred eighty-nine".