1109268865 has 8 divisors (see below), whose sum is σ = 1331320680. Its totient is φ = 887283072.

The previous prime is 1109268859. The next prime is 1109268883. The reversal of 1109268865 is 5688629011.

It can be written as a sum of positive squares in 4 ways, for example, as 56655729 + 1052613136 = 7527^2 + 32444^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1109268865 - 2⁵ = 1109268833 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35181 + ... + 58789.

It is an arithmetic number, because the mean of its divisors is an integer number (166415085).

Almost surely, 2^1109268865 is an apocalyptic number.

It is an amenable number.

1109268865 is a deficient number, since it is larger than the sum of its proper divisors (222051815).

1109268865 is an equidigital number, since it uses as much as digits as its factorization.

1109268865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33011.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 1109268865 is about 33305.6881778473. The cubic root of 1109268865 is about 1035.1714232931.

The spelling of 1109268865 in words is "one billion, one hundred nine million, two hundred sixty-eight thousand, eight hundred sixty-five".