1096996991 has 2 divisors, whose sum is σ = 1096996992. Its totient is φ = 1096996990.

The previous prime is 1096996921. The next prime is 1096996993. The reversal of 1096996991 is 1996996901.

It is a strong prime.

It is an emirp because it is prime and its reverse (1996996901) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1669669601 and 1069669661.

It is a cyclic number.

It is not a de Polignac number, because 1096996991 - 2¹⁰ = 1096995967 is a prime.

It is a Sophie Germain prime.

Together with 1096996993, it forms a pair of twin primes.

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 1096996991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1096996993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548498495 + 548498496.

It is an arithmetic number, because the mean of its divisors is an integer number (548498496).

Almost surely, 2^1096996991 is an apocalyptic number.

1096996991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1096996991 is an equidigital number, since it uses as much as digits as its factorization.

1096996991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2125764, while the sum is 59.

The square root of 1096996991 is about 33120.9448989608. The cubic root of 1096996991 is about 1031.3398816008.

The spelling of 1096996991 in words is "one billion, ninety-six million, nine hundred ninety-six thousand, nine hundred ninety-one".