1141530209 has 2 divisors, whose sum is σ = 1141530210. Its totient is φ = 1141530208.

The previous prime is 1141530199. The next prime is 1141530211. The reversal of 1141530209 is 9020351411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 921304609 + 220225600 = 30353^2 + 14840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141530209 - 2⁴ = 1141530193 is a prime.

It is a Sophie Germain prime.

Together with 1141530211, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1141530259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570765104 + 570765105.

It is an arithmetic number, because the mean of its divisors is an integer number (570765105).

Almost surely, 2^1141530209 is an apocalyptic number.

It is an amenable number.

1141530209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1141530209 is an equidigital number, since it uses as much as digits as its factorization.

1141530209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1141530209 is about 33786.5388727523. The cubic root of 1141530209 is about 1045.1111223910. Note that the first 4 decimals are identical.

The spelling of 1141530209 in words is "one billion, one hundred forty-one million, five hundred thirty thousand, two hundred nine".