1091030666 has 16 divisors (see below), whose sum is σ = 1785950208. Its totient is φ = 495748800.

The previous prime is 1091030657. The next prime is 1091030669. The reversal of 1091030666 is 6660301901.

It is not an unprimeable number, because it can be changed into a prime (1091030669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 71906 + ... + 85746.

It is an arithmetic number, because the mean of its divisors is an integer number (111621888).

Almost surely, 2^1091030666 is an apocalyptic number.

1091030666 is a deficient number, since it is larger than the sum of its proper divisors (694919542).

1091030666 is a wasteful number, since it uses less digits than its factorization.

1091030666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17437.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1091030666 is about 33030.7533368526. The cubic root of 1091030666 is about 1029.4667381324.

The spelling of 1091030666 in words is "one billion, ninety-one million, thirty thousand, six hundred sixty-six".