1196911091 has 2 divisors, whose sum is σ = 1196911092. Its totient is φ = 1196911090.

The previous prime is 1196911057. The next prime is 1196911103. The reversal of 1196911091 is 1901196911.

It is a strong prime.

It is an emirp because it is prime and its reverse (1901196911) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1601169611 and 1169611061.

It is a cyclic number.

It is not a de Polignac number, because 1196911091 - 2²⁶ = 1129802227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1196911291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598455545 + 598455546.

It is an arithmetic number, because the mean of its divisors is an integer number (598455546).

Almost surely, 2^1196911091 is an apocalyptic number.

1196911091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1196911091 is an equidigital number, since it uses as much as digits as its factorization.

1196911091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 38.

The square root of 1196911091 is about 34596.4028621474. The cubic root of 1196911091 is about 1061.7459924884.

The spelling of 1196911091 in words is "one billion, one hundred ninety-six million, nine hundred eleven thousand, ninety-one".