1089384666 has 16 divisors (see below), whose sum is σ = 2209457088. Its totient is φ = 358013600.

The previous prime is 1089384649. The next prime is 1089384677. The reversal of 1089384666 is 6664839801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278195 + ... + 1279046.

It is an arithmetic number, because the mean of its divisors is an integer number (138091068).

Almost surely, 2^1089384666 is an apocalyptic number.

1089384666 is an abundant number, since it is smaller than the sum of its proper divisors (1120072422).

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

1089384666 is a wasteful number, since it uses less digits than its factorization.

1089384666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557317.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 1089384666 is about 33005.8277581399. The cubic root of 1089384666 is about 1028.9487706837.

It can be divided in two parts, 10893 and 84666, that added together give a palindrome (95559).

The spelling of 1089384666 in words is "one billion, eighty-nine million, three hundred eighty-four thousand, six hundred sixty-six".