18668428600 has 48 divisors (see below), whose sum is σ = 43573104000. Its totient is φ = 7438295040.

The previous prime is 18668428589. The next prime is 18668428613. The reversal of 18668428600 is 682486681.

It is a super-3 number, since 3×18668428600³ (a number of 32 digits) contains 333 as substring.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 130200 + ... + 232999.

It is an arithmetic number, because the mean of its divisors is an integer number (907773000).

Almost surely, 2^18668428600 is an apocalyptic number.

18668428600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18668428600 is an abundant number, since it is smaller than the sum of its proper divisors (24904675400).

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

18668428600 is a wasteful number, since it uses less digits than its factorization.

18668428600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363472 (or 363463 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 18668428600 in words is "eighteen billion, six hundred sixty-eight million, four hundred twenty-eight thousand, six hundred".