1166454689 has 2 divisors, whose sum is σ = 1166454690. Its totient is φ = 1166454688.

The previous prime is 1166454659. The next prime is 1166454691. The reversal of 1166454689 is 9864546611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 935870464 + 230584225 = 30592^2 + 15185^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166454689 - 2⁸ = 1166454433 is a prime.

Together with 1166454691, 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 (1166454629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583227344 + 583227345.

It is an arithmetic number, because the mean of its divisors is an integer number (583227345).

Almost surely, 2^1166454689 is an apocalyptic number.

It is an amenable number.

1166454689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166454689 is an equidigital number, since it uses as much as digits as its factorization.

1166454689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 50.

The square root of 1166454689 is about 34153.3993769288. The cubic root of 1166454689 is about 1052.6628373108.

The spelling of 1166454689 in words is "one billion, one hundred sixty-six million, four hundred fifty-four thousand, six hundred eighty-nine".