1012000009 has 2 divisors, whose sum is σ = 1012000010. Its totient is φ = 1012000008.

The previous prime is 1011999971. The next prime is 1012000013. The reversal of 1012000009 is 9000002101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 683665609 + 328334400 = 26147^2 + 18120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012000009 - 2¹⁷ = 1011868937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012000049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506000004 + 506000005.

It is an arithmetic number, because the mean of its divisors is an integer number (506000005).

Almost surely, 2^1012000009 is an apocalyptic number.

It is an amenable number.

1012000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012000009 is an equidigital number, since it uses as much as digits as its factorization.

1012000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1012000009 is about 31811.9475826300. The cubic root of 1012000009 is about 1003.9841087970.

The spelling of 1012000009 in words is "one billion, twelve million, nine", and thus it is an aban number and an uban number.