1150000009 has 2 divisors, whose sum is σ = 1150000010. Its totient is φ = 1150000008.

The previous prime is 1149999973. The next prime is 1150000043. The reversal of 1150000009 is 9000000511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 725763600 + 424236409 = 26940^2 + 20597^2 .

It is a cyclic number.

It is not a de Polignac number, because 1150000009 - 2⁷ = 1149999881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1149999947 and 1150000001.

It is not a weakly prime, because it can be changed into another prime (1150000409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575000004 + 575000005.

It is an arithmetic number, because the mean of its divisors is an integer number (575000005).

Almost surely, 2^1150000009 is an apocalyptic number.

It is an amenable number.

1150000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150000009 is an equidigital number, since it uses as much as digits as its factorization.

1150000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 1150000009 is about 33911.6500483241. The cubic root of 1150000009 is about 1047.6895559048.

The spelling of 1150000009 in words is "one billion, one hundred fifty million, nine", and thus it is an aban number.