1166143165 has 8 divisors (see below), whose sum is σ = 1526587488. Its totient is φ = 848104080.

The previous prime is 1166143123. The next prime is 1166143193. The reversal of 1166143165 is 5613416611.

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

It is not a de Polignac number, because 1166143165 - 2¹³ = 1166134973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166143165.

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, 10601247 + ... + 10601356.

It is an arithmetic number, because the mean of its divisors is an integer number (190823436).

Almost surely, 2^1166143165 is an apocalyptic number.

It is an amenable number.

1166143165 is a deficient number, since it is larger than the sum of its proper divisors (360444323).

1166143165 is a wasteful number, since it uses less digits than its factorization.

1166143165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21202619.

The product of its digits is 12960, while the sum is 34.

The square root of 1166143165 is about 34148.8384136269. The cubic root of 1166143165 is about 1052.5691177295.

Adding to 1166143165 its reverse (5613416611), we get a palindrome (6779559776).

The spelling of 1166143165 in words is "one billion, one hundred sixty-six million, one hundred forty-three thousand, one hundred sixty-five".