1166386723 has 2 divisors, whose sum is σ = 1166386724. Its totient is φ = 1166386722.

The previous prime is 1166386693. The next prime is 1166386747. The reversal of 1166386723 is 3276836611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166386723 - 2⁵ = 1166386691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1166386723.

It is not a weakly prime, because it can be changed into another prime (1166386783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583193361 + 583193362.

It is an arithmetic number, because the mean of its divisors is an integer number (583193362).

Almost surely, 2^1166386723 is an apocalyptic number.

1166386723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166386723 is an equidigital number, since it uses as much as digits as its factorization.

1166386723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 1166386723 is about 34152.4043516705. The cubic root of 1166386723 is about 1052.6423916897.

The spelling of 1166386723 in words is "one billion, one hundred sixty-six million, three hundred eighty-six thousand, seven hundred twenty-three".