1095196991 has 12 divisors (see below), whose sum is σ = 1274543712. Its totient is φ = 938343168.

The previous prime is 1095196981. The next prime is 1095196997. The reversal of 1095196991 is 1996915901.

It is not a de Polignac number, because 1095196991 - 2¹⁴ = 1095180607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1095196997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226586 + ... + 231368.

It is an arithmetic number, because the mean of its divisors is an integer number (106211976).

Almost surely, 2^1095196991 is an apocalyptic number.

1095196991 is a deficient number, since it is larger than the sum of its proper divisors (179346721).

1095196991 is an equidigital number, since it uses as much as digits as its factorization.

1095196991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9470 (or 9463 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 50.

The square root of 1095196991 is about 33093.7606052863. The cubic root of 1095196991 is about 1030.7754837982.

The spelling of 1095196991 in words is "one billion, ninety-five million, one hundred ninety-six thousand, nine hundred ninety-one".