1166550165 has 48 divisors (see below), whose sum is σ = 2210322816. Its totient is φ = 564451200.

The previous prime is 1166550113. The next prime is 1166550191. The reversal of 1166550165 is 5610556611.

It is not a de Polignac number, because 1166550165 - 2¹³ = 1166541973 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 (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 273600 + ... + 277830.

It is an arithmetic number, because the mean of its divisors is an integer number (46048392).

Almost surely, 2^1166550165 is an apocalyptic number.

1166550165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1166550165 is a deficient number, since it is larger than the sum of its proper divisors (1043772651).

1166550165 is a wasteful number, since it uses less digits than its factorization.

1166550165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810 (or 4807 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1166550165 is about 34154.7971008466. The cubic root of 1166550165 is about 1052.6915571848.

The spelling of 1166550165 in words is "one billion, one hundred sixty-six million, five hundred fifty thousand, one hundred sixty-five".