1011068809 has 2 divisors, whose sum is σ = 1011068810. Its totient is φ = 1011068808.

The previous prime is 1011068759. The next prime is 1011068833. The reversal of 1011068809 is 9088601101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1011049209 + 19600 = 31797^2 + 140^2 .

It is an emirp because it is prime and its reverse (9088601101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011068809 - 2¹¹ = 1011066761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011068879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505534404 + 505534405.

It is an arithmetic number, because the mean of its divisors is an integer number (505534405).

Almost surely, 2^1011068809 is an apocalyptic number.

It is an amenable number.

1011068809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011068809 is an equidigital number, since it uses as much as digits as its factorization.

1011068809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 1011068809 is about 31797.3082036829. The cubic root of 1011068809 is about 1003.6760729289.

The spelling of 1011068809 in words is "one billion, eleven million, sixty-eight thousand, eight hundred nine".