1165113288 has 128 divisors (see below), whose sum is σ = 3454320000. Its totient is φ = 362797056.

The previous prime is 1165113283. The next prime is 1165113293. The reversal of 1165113288 is 8823115611.

1165113288 is a `hidden beast` number, since 116 + 511 + 3 + 28 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1165113283) and next prime (1165113293).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1165113283) 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, 297648 + ... + 301536.

It is an arithmetic number, because the mean of its divisors is an integer number (26986875).

Almost surely, 2^1165113288 is an apocalyptic number.

1165113288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165113288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727160000).

1165113288 is an abundant number, since it is smaller than the sum of its proper divisors (2289206712).

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

1165113288 is a wasteful number, since it uses less digits than its factorization.

1165113288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996 (or 3986 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 1165113288 is about 34133.7558437392. The cubic root of 1165113288 is about 1052.2591683653.

Adding to 1165113288 its reverse (8823115611), we get a palindrome (9988228899).

The spelling of 1165113288 in words is "one billion, one hundred sixty-five million, one hundred thirteen thousand, two hundred eighty-eight".