1166507165 has 8 divisors (see below), whose sum is σ = 1448078040. Its totient is φ = 901026112.

The previous prime is 1166507141. The next prime is 1166507179. The reversal of 1166507165 is 5617056611.

It can be written as a sum of positive squares in 4 ways, for example, as 11449 + 1166495716 = 107^2 + 34154^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166507165 - 2⁶ = 1166507101 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4022294 + ... + 4022583.

It is an arithmetic number, because the mean of its divisors is an integer number (181009755).

Almost surely, 2^1166507165 is an apocalyptic number.

It is an amenable number.

1166507165 is a deficient number, since it is larger than the sum of its proper divisors (281570875).

1166507165 is an equidigital number, since it uses as much as digits as its factorization.

1166507165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044911.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 1166507165 is about 34154.1676080680. The cubic root of 1166507165 is about 1052.6786226666.

The spelling of 1166507165 in words is "one billion, one hundred sixty-six million, five hundred seven thousand, one hundred sixty-five".