18005689018 has 16 divisors (see below), whose sum is σ = 27883166976. Its totient is φ = 8711370720.

The previous prime is 18005689001. The next prime is 18005689061. The reversal of 18005689018 is 81098650081.

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, 796905 + ... + 819187.

It is an arithmetic number, because the mean of its divisors is an integer number (1742697936).

Almost surely, 2^18005689018 is an apocalyptic number.

18005689018 is a deficient number, since it is larger than the sum of its proper divisors (9877477958).

18005689018 is a wasteful number, since it uses less digits than its factorization.

18005689018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35349.

The product of its (nonzero) digits is 138240, while the sum is 46.

The spelling of 18005689018 in words is "eighteen billion, five million, six hundred eighty-nine thousand, eighteen".