1165441145 has 24 divisors (see below), whose sum is σ = 1539792072. Its totient is φ = 846179840.

The previous prime is 1165441141. The next prime is 1165441153. The reversal of 1165441145 is 5411445611.

It can be written as a sum of positive squares in 4 ways, for example, as 399480169 + 765960976 = 19987^2 + 27676^2 .

It is not a de Polignac number, because 1165441145 - 2² = 1165441141 is a prime.

It is a super-2 number, since 2×1165441145² = 2716506124917822050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165441141) 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 23 ways as a sum of consecutive naturals, for example, 480977 + ... + 483393.

It is an arithmetic number, because the mean of its divisors is an integer number (64158003).

Almost surely, 2^1165441145 is an apocalyptic number.

It is an amenable number.

1165441145 is a deficient number, since it is larger than the sum of its proper divisors (374350927).

1165441145 is a wasteful number, since it uses less digits than its factorization.

1165441145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241 (or 3230 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 1165441145 is about 34138.5580392611. The cubic root of 1165441145 is about 1052.3578592489.

Adding to 1165441145 its reverse (5411445611), we get a palindrome (6576886756).

The spelling of 1165441145 in words is "one billion, one hundred sixty-five million, four hundred forty-one thousand, one hundred forty-five".