1163444045 has 32 divisors (see below), whose sum is σ = 1509204960. Its totient is φ = 857866240.

The previous prime is 1163444041. The next prime is 1163444053. The reversal of 1163444045 is 5404443611.

It can be written as a sum of positive squares in 16 ways, for example, as 811281289 + 352162756 = 28483^2 + 18766^2 .

It is not a de Polignac number, because 1163444045 - 2² = 1163444041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163444041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 854165 + ... + 855525.

It is an arithmetic number, because the mean of its divisors is an integer number (47162655).

Almost surely, 2^1163444045 is an apocalyptic number.

It is an amenable number.

1163444045 is a deficient number, since it is larger than the sum of its proper divisors (345760915).

1163444045 is a wasteful number, since it uses less digits than its factorization.

1163444045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 1163444045 is about 34109.2955805305. The cubic root of 1163444045 is about 1051.7564087440.

Adding to 1163444045 its reverse (5404443611), we get a palindrome (6567887656).

The spelling of 1163444045 in words is "one billion, one hundred sixty-three million, four hundred forty-four thousand, forty-five".