1143189 has 12 divisors (see below), whose sum is σ = 1696396. Its totient is φ = 741312.

The previous prime is 1143167. The next prime is 1143193. The reversal of 1143189 is 9813411.

It can be written as a sum of positive squares in 2 ways, for example, as 731025 + 412164 = 855^2 + 642^2 .

It is not a de Polignac number, because 1143189 - 2⁷ = 1143061 is a prime.

It is a Duffinian number.

It is a Curzon number.

1143189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1384 + ... + 2049.

2^1143189 is an apocalyptic number.

It is an amenable number.

1143189 is a deficient number, since it is larger than the sum of its proper divisors (553207).

1143189 is a wasteful number, since it uses less digits than its factorization.

1143189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476 (or 3473 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1143189 is about 1069.2001683502. The cubic root of 1143189 is about 104.5617104584.

The spelling of 1143189 in words is "one million, one hundred forty-three thousand, one hundred eighty-nine".