1165287168 has 288 divisors, whose sum is σ = 3743953920. Its totient is φ = 356106240.

The previous prime is 1165287133. The next prime is 1165287181. The reversal of 1165287168 is 8617825611.

1165287168 is a `hidden beast` number, since 116 + 528 + 7 + 1 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

Its product of digits (161280) is a multiple of the sum of its prime divisors (280).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5522583 + ... + 5522793.

It is an arithmetic number, because the mean of its divisors is an integer number (12999840).

Almost surely, 2^1165287168 is an apocalyptic number.

1165287168 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 1165287168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1871976960).

1165287168 is an abundant number, since it is smaller than the sum of its proper divisors (2578666752).

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

1165287168 is a wasteful number, since it uses less digits than its factorization.

1165287168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 280 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 1165287168 is about 34136.3027875018. The cubic root of 1165287168 is about 1052.3115116939.

The spelling of 1165287168 in words is "one billion, one hundred sixty-five million, two hundred eighty-seven thousand, one hundred sixty-eight".