2381328018 has 16 divisors (see below), whose sum is σ = 5291840160. Its totient is φ = 793775988.

The previous prime is 2381327999. The next prime is 2381328031. The reversal of 2381328018 is 8108231832.

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, 22049280 + ... + 22049387.

It is an arithmetic number, because the mean of its divisors is an integer number (330740010).

Almost surely, 2^2381328018 is an apocalyptic number.

2381328018 is an abundant number, since it is smaller than the sum of its proper divisors (2910512142).

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

2381328018 is a wasteful number, since it uses less digits than its factorization.

2381328018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44098678 (or 44098672 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 2381328018 is about 48798.8526299543. The cubic root of 2381328018 is about 1335.3847344603.

The spelling of 2381328018 in words is "two billion, three hundred eighty-one million, three hundred twenty-eight thousand, eighteen".