18221840002 has 16 divisors (see below), whose sum is σ = 28102765824. Its totient is φ = 8855892000.

The previous prime is 18221839991. The next prime is 18221840011. The reversal of 18221840002 is 20004812281.

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, 387774 + ... + 432217.

It is an arithmetic number, because the mean of its divisors is an integer number (1756422864).

Almost surely, 2^18221840002 is an apocalyptic number.

18221840002 is a deficient number, since it is larger than the sum of its proper divisors (9880925822).

18221840002 is a wasteful number, since it uses less digits than its factorization.

18221840002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820305.

The product of its (nonzero) digits is 2048, while the sum is 28.

The spelling of 18221840002 in words is "eighteen billion, two hundred twenty-one million, eight hundred forty thousand, two".