18855132983018 has 8 divisors (see below), whose sum is σ = 29512382060448. Its totient is φ = 9017672296204.

The previous prime is 18855132983017. The next prime is 18855132983051. The reversal of 18855132983018 is 81038923155881.

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 (18855132983017) 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, 204947097596 + ... + 204947097687.

It is an arithmetic number, because the mean of its divisors is an integer number (3689047757556).

Almost surely, 2^{18855132983018} is an apocalyptic number.

18855132983018 is a deficient number, since it is larger than the sum of its proper divisors (10657249077430).

18855132983018 is a wasteful number, since it uses less digits than its factorization.

18855132983018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409894195308.

The product of its (nonzero) digits is 16588800, while the sum is 62.

The spelling of 18855132983018 in words is "eighteen trillion, eight hundred fifty-five billion, one hundred thirty-two million, nine hundred eighty-three thousand, eighteen".