1166152909 has 2 divisors, whose sum is σ = 1166152910. Its totient is φ = 1166152908.

The previous prime is 1166152907. The next prime is 1166152913. The reversal of 1166152909 is 9092516611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1022080900 + 144072009 = 31970^2 + 12003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166152909 - 2¹ = 1166152907 is a prime.

Together with 1166152907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166152907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583076454 + 583076455.

It is an arithmetic number, because the mean of its divisors is an integer number (583076455).

Almost surely, 2^1166152909 is an apocalyptic number.

It is an amenable number.

1166152909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166152909 is an equidigital number, since it uses as much as digits as its factorization.

1166152909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 1166152909 is about 34148.9810828962. The cubic root of 1166152909 is about 1052.5720493892.

The spelling of 1166152909 in words is "one billion, one hundred sixty-six million, one hundred fifty-two thousand, nine hundred nine".