1108921000 has 64 divisors (see below), whose sum is σ = 2830800960. Its totient is φ = 403240000.

The previous prime is 1108920991. The next prime is 1108921001. The reversal of 1108921000 is 1298011.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1108921001) 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 in 15 ways as a sum of consecutive naturals, for example, 39406 + ... + 61405.

It is an arithmetic number, because the mean of its divisors is an integer number (44231265).

Almost surely, 2^1108921000 is an apocalyptic number.

1108921000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1108921000 is an abundant number, since it is smaller than the sum of its proper divisors (1721879960).

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

1108921000 is a wasteful number, since it uses less digits than its factorization.

1108921000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100843 (or 100829 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1108921000 is about 33300.4654622124. The cubic root of 1108921000 is about 1035.0632025941.

The spelling of 1108921000 in words is "one billion, one hundred eight million, nine hundred twenty-one thousand".