1168993109 has 2 divisors, whose sum is σ = 1168993110. Its totient is φ = 1168993108.

The previous prime is 1168993097. The next prime is 1168993121. The reversal of 1168993109 is 9013998611.

It is a balanced prime because it is at equal distance from previous prime (1168993097) and next prime (1168993121).

It can be written as a sum of positive squares in only one way, i.e., 1114558225 + 54434884 = 33385^2 + 7378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1168993109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1168993129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584496554 + 584496555.

It is an arithmetic number, because the mean of its divisors is an integer number (584496555).

Almost surely, 2^1168993109 is an apocalyptic number.

It is an amenable number.

1168993109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168993109 is an equidigital number, since it uses as much as digits as its factorization.

1168993109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 1168993109 is about 34190.5412212208. The cubic root of 1168993109 is about 1053.4258800698.

The spelling of 1168993109 in words is "one billion, one hundred sixty-eight million, nine hundred ninety-three thousand, one hundred nine".