18019820002 has 8 divisors (see below), whose sum is σ = 27487861200. Its totient is φ = 8857199604.

The previous prime is 18019819997. The next prime is 18019820003. The reversal of 18019820002 is 20002891081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18019820003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76355052 + ... + 76355287.

It is an arithmetic number, because the mean of its divisors is an integer number (3435982650).

Almost surely, 2^18019820002 is an apocalyptic number.

18019820002 is a deficient number, since it is larger than the sum of its proper divisors (9468041198).

18019820002 is a wasteful number, since it uses less digits than its factorization.

18019820002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152710400.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 18019820002 in words is "eighteen billion, nineteen million, eight hundred twenty thousand, two".