13868189 has 2 divisors, whose sum is σ = 13868190. Its totient is φ = 13868188.

The previous prime is 13868171. The next prime is 13868201. The reversal of 13868189 is 98186831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9211225 + 4656964 = 3035^2 + 2158^2 .

It is an emirp because it is prime and its reverse (98186831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13868189 - 2²⁰ = 12819613 is a prime.

It is a super-2 number, since 2×13868189² = 384653332279442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13868159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6934094 + 6934095.

It is an arithmetic number, because the mean of its divisors is an integer number (6934095).

Almost surely, 2^13868189 is an apocalyptic number.

It is an amenable number.

13868189 is a deficient number, since it is larger than the sum of its proper divisors (1).

13868189 is an equidigital number, since it uses as much as digits as its factorization.

13868189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 44.

The square root of 13868189 is about 3724.0017454346. The cubic root of 13868189 is about 240.2554513856.

The spelling of 13868189 in words is "thirteen million, eight hundred sixty-eight thousand, one hundred eighty-nine".