1119481111891 has 2 divisors, whose sum is σ = 1119481111892. Its totient is φ = 1119481111890.

The previous prime is 1119481111873. The next prime is 1119481111901. The reversal of 1119481111891 is 1981111849111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1119481111891 - 2¹¹ = 1119481109843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1119481111831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559740555945 + 559740555946.

It is an arithmetic number, because the mean of its divisors is an integer number (559740555946).

Almost surely, 2^{1119481111891} is an apocalyptic number.

1119481111891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1119481111891 is an equidigital number, since it uses as much as digits as its factorization.

1119481111891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 46.

The spelling of 1119481111891 in words is "one trillion, one hundred nineteen billion, four hundred eighty-one million, one hundred eleven thousand, eight hundred ninety-one".