1109749859 has 2 divisors, whose sum is σ = 1109749860. Its totient is φ = 1109749858.

The previous prime is 1109749841. The next prime is 1109749867. The reversal of 1109749859 is 9589479011.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1109749859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1109749859.

It is not a weakly prime, because it can be changed into another prime (1109749889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554874929 + 554874930.

It is an arithmetic number, because the mean of its divisors is an integer number (554874930).

Almost surely, 2^1109749859 is an apocalyptic number.

1109749859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109749859 is an equidigital number, since it uses as much as digits as its factorization.

1109749859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 53.

The square root of 1109749859 is about 33312.9082939331. The cubic root of 1109749859 is about 1035.3210231210.

The spelling of 1109749859 in words is "one billion, one hundred nine million, seven hundred forty-nine thousand, eight hundred fifty-nine".