381818204004 has 24 divisors (see below), whose sum is σ = 891383335360. Its totient is φ = 127204992864.

The previous prime is 381818203999. The next prime is 381818204041. The reversal of 381818204004 is 400402818183.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8444239 + ... + 8489334.

Almost surely, 2^381818204004 is an apocalyptic number.

It is an amenable number.

381818204004 is an abundant number, since it is smaller than the sum of its proper divisors (509565131356).

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

381818204004 is a wasteful number, since it uses less digits than its factorization.

381818204004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16935459 (or 16935457 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The spelling of 381818204004 in words is "three hundred eighty-one billion, eight hundred eighteen million, two hundred four thousand, four".