1109102905 has 4 divisors (see below), whose sum is σ = 1330923492. Its totient is φ = 887282320.

The previous prime is 1109102893. The next prime is 1109102921. The reversal of 1109102905 is 5092019011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 252428544 + 856674361 = 15888^2 + 29269^2 .

It is not a de Polignac number, because 1109102905 - 2⁵ = 1109102873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 110910286 + ... + 110910295.

It is an arithmetic number, because the mean of its divisors is an integer number (332730873).

Almost surely, 2^1109102905 is an apocalyptic number.

It is an amenable number.

1109102905 is a deficient number, since it is larger than the sum of its proper divisors (221820587).

1109102905 is an equidigital number, since it uses as much as digits as its factorization.

1109102905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221820586.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 1109102905 is about 33303.1966183428. The cubic root of 1109102905 is about 1035.1197960087.

The spelling of 1109102905 in words is "one billion, one hundred nine million, one hundred two thousand, nine hundred five".