18334185918 has 16 divisors (see below), whose sum is σ = 36670570896. Its totient is φ = 6111028800.

The previous prime is 18334185841. The next prime is 18334185967. The reversal of 18334185918 is 81958143381.

It is a super-2 number, since 2×18334185918² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28968 + ... + 193668.

It is an arithmetic number, because the mean of its divisors is an integer number (2291910681).

Almost surely, 2^18334185918 is an apocalyptic number.

18334185918 is an abundant number, since it is smaller than the sum of its proper divisors (18336384978).

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

18334185918 is a wasteful number, since it uses less digits than its factorization.

18334185918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183259.

The product of its digits is 829440, while the sum is 51.

The spelling of 18334185918 in words is "eighteen billion, three hundred thirty-four million, one hundred eighty-five thousand, nine hundred eighteen".