18180427688 has 16 divisors (see below), whose sum is σ = 34090298880. Its totient is φ = 9089681328.

The previous prime is 18180427663. The next prime is 18180427753. The reversal of 18180427688 is 88672408181.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104345 + ... + 217367.

It is an arithmetic number, because the mean of its divisors is an integer number (2130643680).

Almost surely, 2^18180427688 is an apocalyptic number.

It is an amenable number.

18180427688 is a deficient number, since it is larger than the sum of its proper divisors (15909871192).

18180427688 is a wasteful number, since it uses less digits than its factorization.

18180427688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133136 (or 133132 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 53.

The spelling of 18180427688 in words is "eighteen billion, one hundred eighty million, four hundred twenty-seven thousand, six hundred eighty-eight".