1105982445649 has 9 divisors (see below), whose sum is σ = 1111946680593. Its totient is φ = 1100050048512.

The previous prime is 1105982445643. The next prime is 1105982445661. The reversal of 1105982445649 is 9465442895011.

The square root of 1105982445649 is 1051657.

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

It can be written as a sum of positive squares in 4 ways, for example, as 490749286225 + 615233159424 = 700535^2 + 784368^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1105982445649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1105982445593 and 1105982445602.

It is not an unprimeable number, because it can be changed into a prime (1105982445643) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 202967077 + ... + 202972525.

It is an arithmetic number, because the mean of its divisors is an integer number (123549631177).

Almost surely, 2^{1105982445649} is an apocalyptic number.

1105982445649 is the 1051657-th square number.

1105982445649 is the 525829-th centered octagonal number.

It is an amenable number.

1105982445649 is a deficient number, since it is larger than the sum of its proper divisors (5964234944).

1105982445649 is an frugal number, since it uses more digits than its factorization.

1105982445649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11284 (or 5642 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 1105982445649 in words is "one trillion, one hundred five billion, nine hundred eighty-two million, four hundred forty-five thousand, six hundred forty-nine".