1091103504481 has 3 divisors (see below), whose sum is σ = 1091104549041. Its totient is φ = 1091102459922.

The previous prime is 1091103504461. The next prime is 1091103504521. The reversal of 1091103504481 is 1844053011901.

The square root of 1091103504481 is 1044559.

It is a perfect power (a square), and thus also a powerful number.

1091103504481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1091103504481 - 2³⁷ = 953664551009 is a prime.

It is a super-2 number, since 2×1091103504481² (a number of 25 digits) contains 22 as substring.

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 1091103504481.

It is not an unprimeable number, because it can be changed into a prime (1091103504431) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 522280 + ... + 1566838.

It is an arithmetic number, because the mean of its divisors is an integer number (363701516347).

Almost surely, 2^{1091103504481} is an apocalyptic number.

1091103504481 is the 1044559-th square number.

1091103504481 is the 522280-th centered octagonal number.

It is an amenable number.

1091103504481 is a deficient number, since it is larger than the sum of its proper divisors (1044560).

1091103504481 is an frugal number, since it uses more digits than its factorization.

1091103504481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089118 (or 1044559 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 1091103504481 in words is "one trillion, ninety-one billion, one hundred three million, five hundred four thousand, four hundred eighty-one".