18682290018 has 48 divisors (see below), whose sum is σ = 48695699520. Its totient is φ = 5056859808.

The previous prime is 18682290001. The next prime is 18682290059. The reversal of 18682290018 is 81009228681.

It is a happy number.

It is an unprimeable number.

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, 3899505 + ... + 3904292.

It is an arithmetic number, because the mean of its divisors is an integer number (1014493740).

Almost surely, 2^18682290018 is an apocalyptic number.

18682290018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18682290018 is an abundant number, since it is smaller than the sum of its proper divisors (30013409502).

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

18682290018 is a wasteful number, since it uses less digits than its factorization.

18682290018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7803831 (or 7803828 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 18682290018 in words is "eighteen billion, six hundred eighty-two million, two hundred ninety thousand, eighteen".