18229669866 has 32 divisors (see below), whose sum is σ = 42271701120. Its totient is φ = 5812358112.

The previous prime is 18229669859. The next prime is 18229669883. The reversal of 18229669866 is 66896692281.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7337595 + ... + 7340078.

It is an arithmetic number, because the mean of its divisors is an integer number (1320990660).

Almost surely, 2^18229669866 is an apocalyptic number.

18229669866 is an abundant number, since it is smaller than the sum of its proper divisors (24042031254).

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

18229669866 is a wasteful number, since it uses less digits than its factorization.

18229669866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14677707 (or 14677701 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 18229669866 in words is "eighteen billion, two hundred twenty-nine million, six hundred sixty-nine thousand, eight hundred sixty-six".