18708196384 has 24 divisors (see below), whose sum is σ = 37435564908. Its totient is φ = 9200751360.

The previous prime is 18708196379. The next prime is 18708196387. The reversal of 18708196384 is 48369180781.

It can be written as a sum of positive squares in 2 ways, for example, as 14222947600 + 4485248784 = 119260^2 + 66972^2 .

It is a super-2 number, since 2×18708196384² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18708196387) 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 3 ways as a sum of consecutive naturals, for example, 4790107 + ... + 4794010.

Almost surely, 2^18708196384 is an apocalyptic number.

It is an amenable number.

18708196384 is an abundant number, since it is smaller than the sum of its proper divisors (18727368524).

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

18708196384 is an equidigital number, since it uses as much as digits as its factorization.

18708196384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9584188 (or 9584180 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 18708196384 in words is "eighteen billion, seven hundred eight million, one hundred ninety-six thousand, three hundred eighty-four".