18041822020 has 24 divisors (see below), whose sum is σ = 39881923200. Its totient is φ = 6836900832.

The previous prime is 18041821951. The next prime is 18041822023. The reversal of 18041822020 is 2022814081.

It is a self number, because there is not a number n which added to its sum of digits gives 18041822020.

It is not an unprimeable number, because it can be changed into a prime (18041822023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23738860 + ... + 23739619.

It is an arithmetic number, because the mean of its divisors is an integer number (1661746800).

Almost surely, 2^18041822020 is an apocalyptic number.

18041822020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18041822020 is an abundant number, since it is smaller than the sum of its proper divisors (21840101180).

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

18041822020 is a wasteful number, since it uses less digits than its factorization.

18041822020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47478507 (or 47478505 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The spelling of 18041822020 in words is "eighteen billion, forty-one million, eight hundred twenty-two thousand, twenty".