1165144128 has 28 divisors (see below), whose sum is σ = 3082777680. Its totient is φ = 388381312.

The previous prime is 1165144117. The next prime is 1165144129. The reversal of 1165144128 is 8214415611.

It is not an unprimeable number, because it can be changed into a prime (1165144129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3034038 + ... + 3034421.

Almost surely, 2^1165144128 is an apocalyptic number.

It is an amenable number.

1165144128 is an abundant number, since it is smaller than the sum of its proper divisors (1917633552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165144128 is an equidigital number, since it uses as much as digits as its factorization.

1165144128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6068474 (or 6068464 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 1165144128 is about 34134.2075929704. The cubic root of 1165144128 is about 1052.2684525516.

Adding to 1165144128 its reverse (8214415611), we get a palindrome (9379559739).

The spelling of 1165144128 in words is "one billion, one hundred sixty-five million, one hundred forty-four thousand, one hundred twenty-eight".