1163115445 has 4 divisors (see below), whose sum is σ = 1395738540. Its totient is φ = 930492352.

The previous prime is 1163115413. The next prime is 1163115463. The reversal of 1163115445 is 5445113611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 517244049 + 645871396 = 22743^2 + 25414^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163115445 - 2⁵ = 1163115413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116311540 + ... + 116311549.

It is an arithmetic number, because the mean of its divisors is an integer number (348934635).

Almost surely, 2^1163115445 is an apocalyptic number.

It is an amenable number.

1163115445 is a deficient number, since it is larger than the sum of its proper divisors (232623095).

1163115445 is an equidigital number, since it uses as much as digits as its factorization.

1163115445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232623094.

The product of its digits is 7200, while the sum is 31.

The square root of 1163115445 is about 34104.4783716157. The cubic root of 1163115445 is about 1051.6573810053.

The spelling of 1163115445 in words is "one billion, one hundred sixty-three million, one hundred fifteen thousand, four hundred forty-five".