11018481920 has 72 divisors (see below), whose sum is σ = 26417036184. Its totient is φ = 4403331072.

The previous prime is 11018481899. The next prime is 11018481941. The reversal of 11018481920 is 2918481011.

It is an interprime number because it is at equal distance from previous prime (11018481899) and next prime (11018481941).

It can be written as a sum of positive squares in 4 ways, for example, as 1329623296 + 9688858624 = 36464^2 + 98432^2 .

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, 1656842 + ... + 1663478.

Almost surely, 2^11018481920 is an apocalyptic number.

11018481920 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 11018481920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13208518092).

11018481920 is an abundant number, since it is smaller than the sum of its proper divisors (15398554264).

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

11018481920 is an equidigital number, since it uses as much as digits as its factorization.

11018481920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7955 (or 7941 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 35.

The spelling of 11018481920 in words is "eleven billion, eighteen million, four hundred eighty-one thousand, nine hundred twenty".