18663554082 has 8 divisors (see below), whose sum is σ = 37327108176. Its totient is φ = 6221184692.

The previous prime is 18663554071. The next prime is 18663554087. The reversal of 18663554082 is 28045536681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

18663554082 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18663554087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555296168 + ... + 1555296179.

It is an arithmetic number, because the mean of its divisors is an integer number (4665888522).

Almost surely, 2^18663554082 is an apocalyptic number.

18663554082 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.

18663554082 is a wasteful number, since it uses less digits than its factorization.

18663554082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110592352.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 18663554082 in words is "eighteen billion, six hundred sixty-three million, five hundred fifty-four thousand, eighty-two".