1009199111 has 2 divisors, whose sum is σ = 1009199112. Its totient is φ = 1009199110.

The previous prime is 1009199089. The next prime is 1009199143. The reversal of 1009199111 is 1119919001.

It is an a-pointer prime, because the next prime (1009199143) can be obtained adding 1009199111 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (1119919001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1009199111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1009198111) 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, 504599555 + 504599556.

It is an arithmetic number, because the mean of its divisors is an integer number (504599556).

Almost surely, 2^1009199111 is an apocalyptic number.

1009199111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009199111 is an equidigital number, since it uses as much as digits as its factorization.

1009199111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 32.

The square root of 1009199111 is about 31767.8943431887. The cubic root of 1009199111 is about 1003.0570154668.

The spelling of 1009199111 in words is "one billion, nine million, one hundred ninety-nine thousand, one hundred eleven".