1081191180191 has 2 divisors, whose sum is σ = 1081191180192. Its totient is φ = 1081191180190.

The previous prime is 1081191180109. The next prime is 1081191180229. The reversal of 1081191180191 is 1910811911801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1081191180191 - 2¹⁴ = 1081191163807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081191140191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540595590095 + 540595590096.

It is an arithmetic number, because the mean of its divisors is an integer number (540595590096).

Almost surely, 2^{1081191180191} is an apocalyptic number.

1081191180191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081191180191 is an equidigital number, since it uses as much as digits as its factorization.

1081191180191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 41.

The spelling of 1081191180191 in words is "one trillion, eighty-one billion, one hundred ninety-one million, one hundred eighty thousand, one hundred ninety-one".