200018381820 has 48 divisors (see below), whose sum is σ = 579363593760. Its totient is φ = 51498985216.

The previous prime is 200018381819. The next prime is 200018381821. The reversal of 200018381820 is 28183810002.

200018381820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (200018381819) and next prime (200018381821).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200018381821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57474807 + ... + 57478286.

It is an arithmetic number, because the mean of its divisors is an integer number (12070074870).

Almost surely, 2^200018381820 is an apocalyptic number.

200018381820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200018381820 is an abundant number, since it is smaller than the sum of its proper divisors (379345211940).

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

200018381820 is a wasteful number, since it uses less digits than its factorization.

200018381820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114953134 (or 114953132 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 200018381820 in words is "two hundred billion, eighteen million, three hundred eighty-one thousand, eight hundred twenty".