1068418909 has 2 divisors, whose sum is σ = 1068418910. Its totient is φ = 1068418908.

The previous prime is 1068418889. The next prime is 1068418951. The reversal of 1068418909 is 9098148601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 974813284 + 93605625 = 31222^2 + 9675^2 .

It is an emirp because it is prime and its reverse (9098148601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1068418909 - 2⁷ = 1068418781 is a prime.

It is a super-2 number, since 2×1068418909² = 2283037930217500562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1068418969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534209454 + 534209455.

It is an arithmetic number, because the mean of its divisors is an integer number (534209455).

Almost surely, 2^1068418909 is an apocalyptic number.

It is an amenable number.

1068418909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068418909 is an equidigital number, since it uses as much as digits as its factorization.

1068418909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 1068418909 is about 32686.6778519935. The cubic root of 1068418909 is about 1022.3050870395.

The spelling of 1068418909 in words is "one billion, sixty-eight million, four hundred eighteen thousand, nine hundred nine".