1095991867 has 4 divisors (see below), whose sum is σ = 1133784720. Its totient is φ = 1058199016.

The previous prime is 1095991817. The next prime is 1095991879. The reversal of 1095991867 is 7681995901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1095991867 - 2¹⁵ = 1095959099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1095991817) 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 in 3 ways as a sum of consecutive naturals, for example, 18896383 + ... + 18896440.

It is an arithmetic number, because the mean of its divisors is an integer number (283446180).

Almost surely, 2^1095991867 is an apocalyptic number.

1095991867 is a deficient number, since it is larger than the sum of its proper divisors (37792853).

1095991867 is an equidigital number, since it uses as much as digits as its factorization.

1095991867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37792852.

The product of its (nonzero) digits is 1224720, while the sum is 55.

The square root of 1095991867 is about 33105.7678811412. The cubic root of 1095991867 is about 1031.0247968013.

The spelling of 1095991867 in words is "one billion, ninety-five million, nine hundred ninety-one thousand, eight hundred sixty-seven".