1109918939 has 4 divisors (see below), whose sum is σ = 1111485120. Its totient is φ = 1108352760.

The previous prime is 1109918923. The next prime is 1109918977. The reversal of 1109918939 is 9398199011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9398199011 = 263 ⋅35734597.

It is a cyclic number.

It is not a de Polignac number, because 1109918939 - 2⁴ = 1109918923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1109918989) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 782027 + ... + 783444.

It is an arithmetic number, because the mean of its divisors is an integer number (277871280).

Almost surely, 2^1109918939 is an apocalyptic number.

1109918939 is a deficient number, since it is larger than the sum of its proper divisors (1566181).

1109918939 is an equidigital number, since it uses as much as digits as its factorization.

1109918939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566180.

The product of its (nonzero) digits is 157464, while the sum is 50.

The square root of 1109918939 is about 33315.4459522907. The cubic root of 1109918939 is about 1035.3736004917.

The spelling of 1109918939 in words is "one billion, one hundred nine million, nine hundred eighteen thousand, nine hundred thirty-nine".