1165161306 has 32 divisors (see below), whose sum is σ = 2373064128. Its totient is φ = 381328640.

The previous prime is 1165161293. The next prime is 1165161331. The reversal of 1165161306 is 6031615611.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 64516 + ... + 80576.

It is an arithmetic number, because the mean of its divisors is an integer number (74158254).

Almost surely, 2^1165161306 is an apocalyptic number.

1165161306 is an abundant number, since it is smaller than the sum of its proper divisors (1207902822).

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

1165161306 is a wasteful number, since it uses less digits than its factorization.

1165161306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16286.

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

The square root of 1165161306 is about 34134.4592164575. The cubic root of 1165161306 is about 1052.2736238084.

Adding to 1165161306 its reverse (6031615611), we get a palindrome (7196776917).

The spelling of 1165161306 in words is "one billion, one hundred sixty-five million, one hundred sixty-one thousand, three hundred six".