18684812002 has 48 divisors (see below), whose sum is σ = 30407576472. Its totient is φ = 8604610560.

The previous prime is 18684811963. The next prime is 18684812089. The reversal of 18684812002 is 20021848681.

It can be written as a sum of positive squares in 4 ways, for example, as 3763945201 + 14920866801 = 61351^2 + 122151^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9974938 + ... + 9976810.

Almost surely, 2^18684812002 is an apocalyptic number.

18684812002 is a deficient number, since it is larger than the sum of its proper divisors (11722764470).

18684812002 is a wasteful number, since it uses less digits than its factorization.

18684812002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291 (or 2272 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The spelling of 18684812002 in words is "eighteen billion, six hundred eighty-four million, eight hundred twelve thousand, two".