18334618390 has 16 divisors (see below), whose sum is σ = 36002523600. Its totient is φ = 6667133920.

The previous prime is 18334618387. The next prime is 18334618391. The reversal of 18334618390 is 9381643381.

It is a self number, because there is not a number n which added to its sum of digits gives 18334618390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18334618391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83339065 + ... + 83339284.

It is an arithmetic number, because the mean of its divisors is an integer number (2250157725).

Almost surely, 2^18334618390 is an apocalyptic number.

18334618390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18334618390 is a deficient number, since it is larger than the sum of its proper divisors (17667905210).

18334618390 is a wasteful number, since it uses less digits than its factorization.

18334618390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166678367.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 18334618390 in words is "eighteen billion, three hundred thirty-four million, six hundred eighteen thousand, three hundred ninety".