18243962118 has 48 divisors (see below), whose sum is σ = 40920984000. Its totient is φ = 5867406720.

The previous prime is 18243962111. The next prime is 18243962141. The reversal of 18243962118 is 81126934281.

18243962118 is a `hidden beast` number, since 1 + 8 + 2 + 4 + 3 + 9 + 621 + 18 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18243962111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 761283 + ... + 784881.

It is an arithmetic number, because the mean of its divisors is an integer number (852520500).

Almost surely, 2^18243962118 is an apocalyptic number.

18243962118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18243962118 is an abundant number, since it is smaller than the sum of its proper divisors (22677021882).

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

18243962118 is a wasteful number, since it uses less digits than its factorization.

18243962118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25117 (or 25114 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The spelling of 18243962118 in words is "eighteen billion, two hundred forty-three million, nine hundred sixty-two thousand, one hundred eighteen".