1100321982 has 56 divisors (see below), whose sum is σ = 2527400736. Its totient is φ = 358947936.

The previous prime is 1100321951. The next prime is 1100321983. The reversal of 1100321982 is 2891230011.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100321983) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 60498 + ... + 76554.

It is an arithmetic number, because the mean of its divisors is an integer number (45132156).

Almost surely, 2^1100321982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100321982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263700368).

1100321982 is an abundant number, since it is smaller than the sum of its proper divisors (1427078754).

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

1100321982 is an equidigital number, since it uses as much as digits as its factorization.

1100321982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16124 (or 16109 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1100321982 is about 33171.1016096843. The cubic root of 1100321982 is about 1032.3808255144.

Adding to 1100321982 its reverse (2891230011), we get a palindrome (3991551993).

The spelling of 1100321982 in words is "one billion, one hundred million, three hundred twenty-one thousand, nine hundred eighty-two".