1091741843809 has 8 divisors (see below), whose sum is σ = 1120007159712. Its totient is φ = 1063554502560.

The previous prime is 1091741843737. The next prime is 1091741843821. The reversal of 1091741843809 is 9083481471901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1091741843809 - 2²³ = 1091733455201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1091741843809.

It is not an unprimeable number, because it can be changed into a prime (1091741843509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19465299 + ... + 19521304.

It is an arithmetic number, because the mean of its divisors is an integer number (140000894964).

Almost surely, 2^{1091741843809} is an apocalyptic number.

It is an amenable number.

1091741843809 is a deficient number, since it is larger than the sum of its proper divisors (28265315903).

1091741843809 is an equidigital number, since it uses as much as digits as its factorization.

1091741843809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38987327.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 1091741843809 in words is "one trillion, ninety-one billion, seven hundred forty-one million, eight hundred forty-three thousand, eight hundred nine".