1115445445 has 32 divisors (see below), whose sum is σ = 1445068800. Its totient is φ = 823991616.

The previous prime is 1115445391. The next prime is 1115445449. The reversal of 1115445445 is 5445445111.

It is a cyclic number.

It is not a de Polignac number, because 1115445445 - 2²³ = 1107056837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1115445445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115445449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 711052 + ... + 712618.

It is an arithmetic number, because the mean of its divisors is an integer number (45158400).

Almost surely, 2^1115445445 is an apocalyptic number.

It is an amenable number.

1115445445 is a deficient number, since it is larger than the sum of its proper divisors (329623355).

1115445445 is a wasteful number, since it uses less digits than its factorization.

1115445445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777.

The product of its digits is 32000, while the sum is 34.

The square root of 1115445445 is about 33398.2850607632. The cubic root of 1115445445 is about 1037.0891995357.

The spelling of 1115445445 in words is "one billion, one hundred fifteen million, four hundred forty-five thousand, four hundred forty-five".