1109749841 has 2 divisors, whose sum is σ = 1109749842. Its totient is φ = 1109749840.

The previous prime is 1109749813. The next prime is 1109749859. The reversal of 1109749841 is 1489479011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 560316241 + 549433600 = 23671^2 + 23440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109749841 - 2²² = 1105555537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1109749792 and 1109749801.

It is not a weakly prime, because it can be changed into another prime (1109749871) 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 as a sum of consecutive naturals, namely, 554874920 + 554874921.

It is an arithmetic number, because the mean of its divisors is an integer number (554874921).

Almost surely, 2^1109749841 is an apocalyptic number.

It is an amenable number.

1109749841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109749841 is an equidigital number, since it uses as much as digits as its factorization.

1109749841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 1109749841 is about 33312.9080237676. The cubic root of 1109749841 is about 1035.3210175235.

The spelling of 1109749841 in words is "one billion, one hundred nine million, seven hundred forty-nine thousand, eight hundred forty-one".