1099285668 has 120 divisors (see below), whose sum is σ = 3195019520. Its totient is φ = 327291840.

The previous prime is 1099285639. The next prime is 1099285673. The reversal of 1099285668 is 8665829901.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 in 39 ways as a sum of consecutive naturals, for example, 126363 + ... + 134781.

Almost surely, 2^1099285668 is an apocalyptic number.

1099285668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099285668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597509760).

1099285668 is an abundant number, since it is smaller than the sum of its proper divisors (2095733852).

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

1099285668 is a wasteful number, since it uses less digits than its factorization.

1099285668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479 (or 8468 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 1099285668 is about 33155.4771945753. The cubic root of 1099285668 is about 1032.0566153364.

The spelling of 1099285668 in words is "one billion, ninety-nine million, two hundred eighty-five thousand, six hundred sixty-eight".