1109036891 has 2 divisors, whose sum is σ = 1109036892. Its totient is φ = 1109036890.

The previous prime is 1109036869. The next prime is 1109036893. The reversal of 1109036891 is 1986309011.

It is a strong prime.

It is an emirp because it is prime and its reverse (1986309011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1109036891 - 2¹⁰ = 1109035867 is a prime.

It is a Sophie Germain prime.

Together with 1109036893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1109036893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554518445 + 554518446.

It is an arithmetic number, because the mean of its divisors is an integer number (554518446).

Almost surely, 2^1109036891 is an apocalyptic number.

1109036891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109036891 is an equidigital number, since it uses as much as digits as its factorization.

1109036891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1109036891 is about 33302.2054975342. The cubic root of 1109036891 is about 1035.0992587638.

The spelling of 1109036891 in words is "one billion, one hundred nine million, thirty-six thousand, eight hundred ninety-one".