1091111748193 has 4 divisors (see below), whose sum is σ = 1092808656688. Its totient is φ = 1089414839700.

The previous prime is 1091111748151. The next prime is 1091111748257. The reversal of 1091111748193 is 3918471111901.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1091111748193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1091111728193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848453283 + ... + 848454568.

It is an arithmetic number, because the mean of its divisors is an integer number (273202164172).

Almost surely, 2^{1091111748193} is an apocalyptic number.

It is an amenable number.

1091111748193 is a deficient number, since it is larger than the sum of its proper divisors (1696908495).

1091111748193 is an equidigital number, since it uses as much as digits as its factorization.

1091111748193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696908494.

The product of its (nonzero) digits is 54432, while the sum is 46.

The spelling of 1091111748193 in words is "one trillion, ninety-one billion, one hundred eleven million, seven hundred forty-eight thousand, one hundred ninety-three".