1145189 has 2 divisors, whose sum is σ = 1145190. Its totient is φ = 1145188.

The previous prime is 1145173. The next prime is 1145191. The reversal of 1145189 is 9815411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 289 = 1070^2 + 17^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145189 - 2⁴ = 1145173 is a prime.

It is a super-2 number, since 2×1145189² = 2622915691442, which contains 22 as substring.

Together with 1145191, 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 (1145129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572594 + 572595.

It is an arithmetic number, because the mean of its divisors is an integer number (572595).

2^1145189 is an apocalyptic number.

It is an amenable number.

1145189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145189 is an equidigital number, since it uses as much as digits as its factorization.

1145189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 29.

The square root of 1145189 is about 1070.1350382078. The cubic root of 1145189 is about 104.6226515586.

The spelling of 1145189 in words is "one million, one hundred forty-five thousand, one hundred eighty-nine".