1166541773 has 2 divisors, whose sum is σ = 1166541774. Its totient is φ = 1166541772.

The previous prime is 1166541763. The next prime is 1166541787. The reversal of 1166541773 is 3771456611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1101045124 + 65496649 = 33182^2 + 8093^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166541773 - 2⁸ = 1166541517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166541773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166541763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583270886 + 583270887.

It is an arithmetic number, because the mean of its divisors is an integer number (583270887).

Almost surely, 2^1166541773 is an apocalyptic number.

It is an amenable number.

1166541773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166541773 is an equidigital number, since it uses as much as digits as its factorization.

1166541773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 1166541773 is about 34154.6742481904. The cubic root of 1166541773 is about 1052.6890328731.

The spelling of 1166541773 in words is "one billion, one hundred sixty-six million, five hundred forty-one thousand, seven hundred seventy-three".