1109396651849 has 2 divisors, whose sum is σ = 1109396651850. Its totient is φ = 1109396651848.

The previous prime is 1109396651819. The next prime is 1109396651879. The reversal of 1109396651849 is 9481566939011.

It is a balanced prime because it is at equal distance from previous prime (1109396651819) and next prime (1109396651879).

It can be written as a sum of positive squares in only one way, i.e., 964412382025 + 144984269824 = 982045^2 + 380768^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109396651849 - 2²⁴ = 1109379874633 is a prime.

It is a super-2 number, since 2×1109396651849² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1109396651791 and 1109396651800.

It is not a weakly prime, because it can be changed into another prime (1109396651819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554698325924 + 554698325925.

It is an arithmetic number, because the mean of its divisors is an integer number (554698325925).

Almost surely, 2^{1109396651849} is an apocalyptic number.

It is an amenable number.

1109396651849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109396651849 is an equidigital number, since it uses as much as digits as its factorization.

1109396651849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12597120, while the sum is 62.

The spelling of 1109396651849 in words is "one trillion, one hundred nine billion, three hundred ninety-six million, six hundred fifty-one thousand, eight hundred forty-nine".