1166550975 has 36 divisors (see below), whose sum is σ = 2095032576. Its totient is φ = 620490240.

The previous prime is 1166550947. The next prime is 1166550991. The reversal of 1166550975 is 5790556611.

1166550975 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 550 + 97 + 5 = 666.

1166550975 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1166550975 - 2⁵ = 1166550943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1166550975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 79407 + ... + 92943.

Almost surely, 2^1166550975 is an apocalyptic number.

1166550975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1166550975 is a deficient number, since it is larger than the sum of its proper divisors (928481601).

1166550975 is a wasteful number, since it uses less digits than its factorization.

1166550975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13936 (or 13928 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 45.

The square root of 1166550975 is about 34154.8089586225. The cubic root of 1166550975 is about 1052.6918008320.

The spelling of 1166550975 in words is "one billion, one hundred sixty-six million, five hundred fifty thousand, nine hundred seventy-five".