1111791841 has 4 divisors (see below), whose sum is σ = 1111998384. Its totient is φ = 1111585300.

The previous prime is 1111791839. The next prime is 1111791851. The reversal of 1111791841 is 1481971111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1481971111 = 173 ⋅8566307.

It is a cyclic number.

It is not a de Polignac number, because 1111791841 - 2¹ = 1111791839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111791797 and 1111791806.

It is not an unprimeable number, because it can be changed into a prime (1111791851) 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, 94975 + ... + 106036.

It is an arithmetic number, because the mean of its divisors is an integer number (277999596).

Almost surely, 2^1111791841 is an apocalyptic number.

It is an amenable number.

1111791841 is a deficient number, since it is larger than the sum of its proper divisors (206543).

1111791841 is an equidigital number, since it uses as much as digits as its factorization.

1111791841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206542.

The product of its digits is 2016, while the sum is 34.

The square root of 1111791841 is about 33343.5427181936. The cubic root of 1111791841 is about 1035.9556440737.

The spelling of 1111791841 in words is "one billion, one hundred eleven million, seven hundred ninety-one thousand, eight hundred forty-one".