1108552909 has 4 divisors (see below), whose sum is σ = 1111199040. Its totient is φ = 1105906780.

The previous prime is 1108552867. The next prime is 1108552933. The reversal of 1108552909 is 9092558011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1108552909 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1108552009) by changing a digit.

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, 1322437 + ... + 1323274.

It is an arithmetic number, because the mean of its divisors is an integer number (277799760).

Almost surely, 2^1108552909 is an apocalyptic number.

It is an amenable number.

1108552909 is a deficient number, since it is larger than the sum of its proper divisors (2646131).

1108552909 is an equidigital number, since it uses as much as digits as its factorization.

1108552909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646130.

The product of its (nonzero) digits is 32400, while the sum is 40.

The square root of 1108552909 is about 33294.9381888599. The cubic root of 1108552909 is about 1034.9486649451.

The spelling of 1108552909 in words is "one billion, one hundred eight million, five hundred fifty-two thousand, nine hundred nine".