1068407309 has 2 divisors, whose sum is σ = 1068407310. Its totient is φ = 1068407308.

The previous prime is 1068407303. The next prime is 1068407321. The reversal of 1068407309 is 9037048601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 916575625 + 151831684 = 30275^2 + 12322^2 .

It is a cyclic number.

It is not a de Polignac number, because 1068407309 - 2¹⁶ = 1068341773 is a prime.

It is a super-2 number, since 2×1068407309² = 2282988355849242962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1068407303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534203654 + 534203655.

It is an arithmetic number, because the mean of its divisors is an integer number (534203655).

Almost surely, 2^1068407309 is an apocalyptic number.

It is an amenable number.

1068407309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068407309 is an equidigital number, since it uses as much as digits as its factorization.

1068407309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1068407309 is about 32686.5004091903. The cubic root of 1068407309 is about 1022.3013872479.

The spelling of 1068407309 in words is "one billion, sixty-eight million, four hundred seven thousand, three hundred nine".