18041888040 has 64 divisors (see below), whose sum is σ = 59046183360. Its totient is φ = 4373790720.

The previous prime is 18041888021. The next prime is 18041888071. The reversal of 18041888040 is 4088814081.

It is a junction number, because it is equal to n+sod(n) for n = 18041887983 and 18041888001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6832729 + ... + 6835368.

It is an arithmetic number, because the mean of its divisors is an integer number (922596615).

Almost surely, 2^18041888040 is an apocalyptic number.

18041888040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18041888040 is an abundant number, since it is smaller than the sum of its proper divisors (41004295320).

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

18041888040 is a wasteful number, since it uses less digits than its factorization.

18041888040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13668122 (or 13668118 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 42.

The spelling of 18041888040 in words is "eighteen billion, forty-one million, eight hundred eighty-eight thousand, forty".