1141143209 has 2 divisors, whose sum is σ = 1141143210. Its totient is φ = 1141143208.

The previous prime is 1141143193. The next prime is 1141143239. The reversal of 1141143209 is 9023411411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 690217984 + 450925225 = 26272^2 + 21235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141143209 - 2⁴ = 1141143193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1141143239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570571604 + 570571605.

It is an arithmetic number, because the mean of its divisors is an integer number (570571605).

Almost surely, 2^1141143209 is an apocalyptic number.

It is an amenable number.

1141143209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1141143209 is an equidigital number, since it uses as much as digits as its factorization.

1141143209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1141143209 is about 33780.8112543201. The cubic root of 1141143209 is about 1044.9930049973.

The spelling of 1141143209 in words is "one billion, one hundred forty-one million, one hundred forty-three thousand, two hundred nine".