1166205011 has 2 divisors, whose sum is σ = 1166205012. Its totient is φ = 1166205010.

The previous prime is 1166204999. The next prime is 1166205017. The reversal of 1166205011 is 1105026611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166205011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1166205017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583102505 + 583102506.

It is an arithmetic number, because the mean of its divisors is an integer number (583102506).

Almost surely, 2^1166205011 is an apocalyptic number.

1166205011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166205011 is an equidigital number, since it uses as much as digits as its factorization.

1166205011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 1166205011 is about 34149.7439375466. The cubic root of 1166205011 is about 1052.5877249471.

The spelling of 1166205011 in words is "one billion, one hundred sixty-six million, two hundred five thousand, eleven".