1109469091 has 2 divisors, whose sum is σ = 1109469092. Its totient is φ = 1109469090.

The previous prime is 1109469089. The next prime is 1109469103. The reversal of 1109469091 is 1909649011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1109469091 - 2¹ = 1109469089 is a prime.

Together with 1109469089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1109469391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554734545 + 554734546.

It is an arithmetic number, because the mean of its divisors is an integer number (554734546).

Almost surely, 2^1109469091 is an apocalyptic number.

1109469091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109469091 is an equidigital number, since it uses as much as digits as its factorization.

1109469091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 1109469091 is about 33308.6939251601. The cubic root of 1109469091 is about 1035.2337032839.

The spelling of 1109469091 in words is "one billion, one hundred nine million, four hundred sixty-nine thousand, ninety-one".