1111189 has 2 divisors, whose sum is σ = 1111190. Its totient is φ = 1111188.

The previous prime is 1111183. The next prime is 1111211. The reversal of 1111189 is 9811111.

It is an a-pointer prime, because the next prime (1111211) can be obtained adding 1111189 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067089 + 44100 = 1033^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111189 - 2³ = 1111181 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555594 + 555595.

It is an arithmetic number, because the mean of its divisors is an integer number (555595).

2^1111189 is an apocalyptic number.

It is an amenable number.

1111189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111189 is an equidigital number, since it uses as much as digits as its factorization.

1111189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 22.

The square root of 1111189 is about 1054.1294986860. The cubic root of 1111189 is about 103.5768369975.

The spelling of 1111189 in words is "one million, one hundred eleven thousand, one hundred eighty-nine".