1166506259 has 2 divisors, whose sum is σ = 1166506260. Its totient is φ = 1166506258.

The previous prime is 1166506219. The next prime is 1166506261. The reversal of 1166506259 is 9526056611.

It is a strong prime.

It is an emirp because it is prime and its reverse (9526056611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166506259 - 2²⁴ = 1149729043 is a prime.

Together with 1166506261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1166506219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583253129 + 583253130.

It is an arithmetic number, because the mean of its divisors is an integer number (583253130).

Almost surely, 2^1166506259 is an apocalyptic number.

1166506259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166506259 is an equidigital number, since it uses as much as digits as its factorization.

1166506259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 1166506259 is about 34154.1543446767. The cubic root of 1166506259 is about 1052.6783501359.

The spelling of 1166506259 in words is "one billion, one hundred sixty-six million, five hundred six thousand, two hundred fifty-nine".