1011100009 has 2 divisors, whose sum is σ = 1011100010. Its totient is φ = 1011100008.

The previous prime is 1011100003. The next prime is 1011100019. The reversal of 1011100009 is 9000011101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623600784 + 387499225 = 24972^2 + 19685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011100009 - 2¹³ = 1011091817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011100003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505550004 + 505550005.

It is an arithmetic number, because the mean of its divisors is an integer number (505550005).

Almost surely, 2^1011100009 is an apocalyptic number.

It is an amenable number.

1011100009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011100009 is an equidigital number, since it uses as much as digits as its factorization.

1011100009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 1011100009 is about 31797.7988074646. The cubic root of 1011100009 is about 1003.6863967800.

The spelling of 1011100009 in words is "one billion, eleven million, one hundred thousand, nine".