11191907 has 2 divisors, whose sum is σ = 11191908. Its totient is φ = 11191906.

The previous prime is 11191903. The next prime is 11191913. The reversal of 11191907 is 70919111.

11191907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (70919111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11191907 - 2² = 11191903 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11191907.

It is not a weakly prime, because it can be changed into another prime (11191903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5595953 + 5595954.

It is an arithmetic number, because the mean of its divisors is an integer number (5595954).

Almost surely, 2^11191907 is an apocalyptic number.

11191907 is a deficient number, since it is larger than the sum of its proper divisors (1).

11191907 is an equidigital number, since it uses as much as digits as its factorization.

11191907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 29.

The square root of 11191907 is about 3345.4307644906. The cubic root of 11191907 is about 223.6838852547.

The spelling of 11191907 in words is "eleven million, one hundred ninety-one thousand, nine hundred seven".