1166541886 has 4 divisors (see below), whose sum is σ = 1749812832. Its totient is φ = 583270942.

The previous prime is 1166541851. The next prime is 1166541889. The reversal of 1166541886 is 6881456611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6881456611 = 601 ⋅11450011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166541889) by changing a digit.

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 as a sum of consecutive naturals, namely, 291635470 + ... + 291635473.

It is an arithmetic number, because the mean of its divisors is an integer number (437453208).

Almost surely, 2^1166541886 is an apocalyptic number.

1166541886 is a deficient number, since it is larger than the sum of its proper divisors (583270946).

1166541886 is an equidigital number, since it uses as much as digits as its factorization.

1166541886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583270945.

The product of its digits is 276480, while the sum is 46.

The square root of 1166541886 is about 34154.6759024295. The cubic root of 1166541886 is about 1052.6890668636.

The spelling of 1166541886 in words is "one billion, one hundred sixty-six million, five hundred forty-one thousand, eight hundred eighty-six".