1101003840 has 168 divisors, whose sum is σ = 3927530880. Its totient is φ = 293580288.

The previous prime is 1101003797. The next prime is 1101003847. The reversal of 1101003840 is 483001011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1101003847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70681 + ... + 84839.

It is an arithmetic number, because the mean of its divisors is an integer number (23378160).

Almost surely, 2^1101003840 is an apocalyptic number.

1101003840 is a gapful number since it is divisible by the number (10) 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 1101003840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1963765440).

1101003840 is an abundant number, since it is smaller than the sum of its proper divisors (2826527040).

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

1101003840 is an equidigital number, since it uses as much as digits as its factorization.

1101003840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14191 (or 14169 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1101003840 is about 33181.3779099060. The cubic root of 1101003840 is about 1032.5940333387.

Adding to 1101003840 its reverse (483001011), we get a palindrome (1584004851).

The spelling of 1101003840 in words is "one billion, one hundred one million, three thousand, eight hundred forty".