18838130668 has 12 divisors (see below), whose sum is σ = 37676261392. Its totient is φ = 8073484560.

The previous prime is 18838130653. The next prime is 18838130687. The reversal of 18838130668 is 86603183881.

18838130668 is an admirable number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 336395163 + ... + 336395218.

Almost surely, 2^18838130668 is an apocalyptic number.

It is an amenable number.

18838130668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18838130668 is a wasteful number, since it uses less digits than its factorization.

18838130668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672790392 (or 672790390 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 52.

The spelling of 18838130668 in words is "eighteen billion, eight hundred thirty-eight million, one hundred thirty thousand, six hundred sixty-eight".