1012068209 has 2 divisors, whose sum is σ = 1012068210. Its totient is φ = 1012068208.

The previous prime is 1012068203. The next prime is 1012068223. The reversal of 1012068209 is 9028602101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1009459984 + 2608225 = 31772^2 + 1615^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012068209 - 2²⁸ = 743632753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1012068203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506034104 + 506034105.

It is an arithmetic number, because the mean of its divisors is an integer number (506034105).

Almost surely, 2^1012068209 is an apocalyptic number.

It is an amenable number.

1012068209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012068209 is an equidigital number, since it uses as much as digits as its factorization.

1012068209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1012068209 is about 31813.0194888822. The cubic root of 1012068209 is about 1004.0066615564.

The spelling of 1012068209 in words is "one billion, twelve million, sixty-eight thousand, two hundred nine".