1091790289643 has 2 divisors, whose sum is σ = 1091790289644. Its totient is φ = 1091790289642.

The previous prime is 1091790289613. The next prime is 1091790289661. The reversal of 1091790289643 is 3469820971901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1091790289643 - 2³⁰ = 1090716547819 is a prime.

It is not a weakly prime, because it can be changed into another prime (1091790289613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545895144821 + 545895144822.

It is an arithmetic number, because the mean of its divisors is an integer number (545895144822).

Almost surely, 2^{1091790289643} is an apocalyptic number.

1091790289643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091790289643 is an equidigital number, since it uses as much as digits as its factorization.

1091790289643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 1091790289643 in words is "one trillion, ninety-one billion, seven hundred ninety million, two hundred eighty-nine thousand, six hundred forty-three".