18658118044 has 12 divisors (see below), whose sum is σ = 32659965184. Its totient is φ = 9326699424.

The previous prime is 18658118033. The next prime is 18658118053. The reversal of 18658118044 is 44081185681.

It is a junction number, because it is equal to n+sod(n) for n = 18658117985 and 18658118003.

It is a congruent number.

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, 572049 + ... + 603784.

Almost surely, 2^18658118044 is an apocalyptic number.

It is an amenable number.

18658118044 is a deficient number, since it is larger than the sum of its proper divisors (14001847140).

18658118044 is a wasteful number, since it uses less digits than its factorization.

18658118044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179804 (or 1179802 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 46.

The spelling of 18658118044 in words is "eighteen billion, six hundred fifty-eight million, one hundred eighteen thousand, forty-four".