1166559285 has 16 divisors (see below), whose sum is σ = 1870174080. Its totient is φ = 620938560.

The previous prime is 1166559271. The next prime is 1166559349. The reversal of 1166559285 is 5829556611.

It is not a de Polignac number, because 1166559285 - 2⁶ = 1166559221 is a prime.

It is a super-2 number, since 2×1166559285² = 2721721130839422450, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 68761 + ... + 84030.

It is an arithmetic number, because the mean of its divisors is an integer number (116885880).

Almost surely, 2^1166559285 is an apocalyptic number.

1166559285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1166559285 is a deficient number, since it is larger than the sum of its proper divisors (703614795).

1166559285 is a wasteful number, since it uses less digits than its factorization.

1166559285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153308.

The product of its digits is 648000, while the sum is 48.

The square root of 1166559285 is about 34154.9306103819. The cubic root of 1166559285 is about 1052.6943004650.

The spelling of 1166559285 in words is "one billion, one hundred sixty-six million, five hundred fifty-nine thousand, two hundred eighty-five".