1109267443 has 12 divisors (see below), whose sum is σ = 1174653480. Its totient is φ = 1047357216.

The previous prime is 1109267387. The next prime is 1109267447. The reversal of 1109267443 is 3447629011.

It is not a de Polignac number, because 1109267443 - 2²¹ = 1107170291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109267447) 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, 105823 + ... + 115831.

It is an arithmetic number, because the mean of its divisors is an integer number (97887790).

Almost surely, 2^1109267443 is an apocalyptic number.

1109267443 is a deficient number, since it is larger than the sum of its proper divisors (65386037).

1109267443 is a wasteful number, since it uses less digits than its factorization.

1109267443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10354 (or 10335 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1109267443 is about 33305.6668301357. Note that the first 3 decimals coincide. The cubic root of 1109267443 is about 1035.1709809554.

The spelling of 1109267443 in words is "one billion, one hundred nine million, two hundred sixty-seven thousand, four hundred forty-three".