18683823400 has 192 divisors, whose sum is σ = 49235688000. Its totient is φ = 6533683200.

The previous prime is 18683823397. The next prime is 18683823409. The reversal of 18683823400 is 432838681.

It is not an unprimeable number, because it can be changed into a prime (18683823409) 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 47 ways as a sum of consecutive naturals, for example, 7243311 + ... + 7245889.

It is an arithmetic number, because the mean of its divisors is an integer number (256435875).

Almost surely, 2^18683823400 is an apocalyptic number.

18683823400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18683823400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24617844000).

18683823400 is an abundant number, since it is smaller than the sum of its proper divisors (30551864600).

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

18683823400 is a wasteful number, since it uses less digits than its factorization.

18683823400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 18683823400 in words is "eighteen billion, six hundred eighty-three million, eight hundred twenty-three thousand, four hundred".