11908189 has 2 divisors, whose sum is σ = 11908190. Its totient is φ = 11908188.

The previous prime is 11908159. The next prime is 11908213. The reversal of 11908189 is 98180911.

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., 11276164 + 632025 = 3358^2 + 795^2 .

It is a cyclic number.

It is not a de Polignac number, because 11908189 - 2⁵ = 11908157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11908159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5954094 + 5954095.

It is an arithmetic number, because the mean of its divisors is an integer number (5954095).

Almost surely, 2^11908189 is an apocalyptic number.

It is an amenable number.

11908189 is a deficient number, since it is larger than the sum of its proper divisors (1).

11908189 is an equidigital number, since it uses as much as digits as its factorization.

11908189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 11908189 is about 3450.8243942571. The cubic root of 11908189 is about 228.3574788728.

The spelling of 11908189 in words is "eleven million, nine hundred eight thousand, one hundred eighty-nine".