1109101985 has 8 divisors (see below), whose sum is σ = 1331373120. Its totient is φ = 886981104.

The previous prime is 1109101969. The next prime is 1109101993. The reversal of 1109101985 is 5891019011.

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 1109101985 - 2⁴ = 1109101969 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 20627 + ... + 51416.

It is an arithmetic number, because the mean of its divisors is an integer number (166421640).

Almost surely, 2^1109101985 is an apocalyptic number.

It is an amenable number.

1109101985 is a deficient number, since it is larger than the sum of its proper divisors (222271135).

1109101985 is an equidigital number, since it uses as much as digits as its factorization.

1109101985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75127.

The product of its (nonzero) digits is 3240, while the sum is 35.

The square root of 1109101985 is about 33303.1828058521. The cubic root of 1109101985 is about 1035.1195097982.

The spelling of 1109101985 in words is "one billion, one hundred nine million, one hundred one thousand, nine hundred eighty-five".