2002018381820 has 48 divisors (see below), whose sum is σ = 4292939595168. Its totient is φ = 784072074240.

The previous prime is 2002018381819. The next prime is 2002018381889. The reversal of 2002018381820 is 281838102002.

It is a super-2 number, since 2×2002018381820² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 4804526 + ... + 5204565.

It is an arithmetic number, because the mean of its divisors is an integer number (89436241566).

Almost surely, 2^{2002018381820} is an apocalyptic number.

2002018381820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002018381820 is an abundant number, since it is smaller than the sum of its proper divisors (2290921213348).

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

2002018381820 is a wasteful number, since it uses less digits than its factorization.

2002018381820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009310 (or 10009308 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The spelling of 2002018381820 in words is "two trillion, two billion, eighteen million, three hundred eighty-one thousand, eight hundred twenty".