381840200020 has 12 divisors (see below), whose sum is σ = 801864420084. Its totient is φ = 152736080000.

The previous prime is 381840200003. The next prime is 381840200033. The reversal of 381840200020 is 20002048183.

It can be written as a sum of positive squares in 2 ways, for example, as 117646256016 + 264193944004 = 342996^2 + 513998^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9546004981 + ... + 9546005020.

It is an arithmetic number, because the mean of its divisors is an integer number (66822035007).

Almost surely, 2^381840200020 is an apocalyptic number.

It is an amenable number.

381840200020 is an abundant number, since it is smaller than the sum of its proper divisors (420024220064).

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

381840200020 is a wasteful number, since it uses less digits than its factorization.

381840200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19092010010 (or 19092010008 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 381840200020 in words is "three hundred eighty-one billion, eight hundred forty million, two hundred thousand, twenty".