1165061136 has 120 divisors (see below), whose sum is σ = 3332599200. Its totient is φ = 349488128.

The previous prime is 1165061101. The next prime is 1165061137. The reversal of 1165061136 is 6311605611.

It is a super-2 number, since 2×1165061136² = 2714734901235220992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1165061137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430315 + ... + 433013.

It is an arithmetic number, because the mean of its divisors is an integer number (27771660).

Almost surely, 2^1165061136 is an apocalyptic number.

1165061136 is a gapful number since it is divisible by the number (16) 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 1165061136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1666299600).

1165061136 is an abundant number, since it is smaller than the sum of its proper divisors (2167538064).

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

1165061136 is a wasteful number, since it uses less digits than its factorization.

1165061136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773 (or 2744 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1165061136 is about 34132.9918993340. The cubic root of 1165061136 is about 1052.2434679639.

Adding to 1165061136 its reverse (6311605611), we get a palindrome (7476666747).

The spelling of 1165061136 in words is "one billion, one hundred sixty-five million, sixty-one thousand, one hundred thirty-six".