1183543345891 has 2 divisors, whose sum is σ = 1183543345892. Its totient is φ = 1183543345890.

The previous prime is 1183543345861. The next prime is 1183543345903. The reversal of 1183543345891 is 1985433453811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1183543345891 - 2⁷ = 1183543345763 is a prime.

It is not a weakly prime, because it can be changed into another prime (1183543345811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 591771672945 + 591771672946.

It is an arithmetic number, because the mean of its divisors is an integer number (591771672946).

Almost surely, 2^{1183543345891} is an apocalyptic number.

1183543345891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1183543345891 is an equidigital number, since it uses as much as digits as its factorization.

1183543345891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 55.

The spelling of 1183543345891 in words is "one trillion, one hundred eighty-three billion, five hundred forty-three million, three hundred forty-five thousand, eight hundred ninety-one".