1166109786 has 24 divisors (see below), whose sum is σ = 2532291840. Its totient is φ = 387823176.

The previous prime is 1166109761. The next prime is 1166109793. The reversal of 1166109786 is 6879016611.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65146 + ... + 81093.

It is an arithmetic number, because the mean of its divisors is an integer number (105512160).

Almost surely, 2^1166109786 is an apocalyptic number.

1166109786 is an abundant number, since it is smaller than the sum of its proper divisors (1366182054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166109786 is a wasteful number, since it uses less digits than its factorization.

1166109786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146690 (or 146687 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1166109786 is about 34148.3496819392. The cubic root of 1166109786 is about 1052.5590749260.

The spelling of 1166109786 in words is "one billion, one hundred sixty-six million, one hundred nine thousand, seven hundred eighty-six".