18844458600 has 96 divisors (see below), whose sum is σ = 63728555040. Its totient is φ = 4568352000.

The previous prime is 18844458583. The next prime is 18844458623. The reversal of 18844458600 is 685444881.

It is a happy number.

It is a super-2 number, since 2×18844458600² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18844458600.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1421011 + ... + 1434210.

It is an arithmetic number, because the mean of its divisors is an integer number (663839115).

Almost surely, 2^18844458600 is an apocalyptic number.

18844458600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18844458600 is an abundant number, since it is smaller than the sum of its proper divisors (44884096440).

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

18844458600 is a wasteful number, since it uses less digits than its factorization.

18844458600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855251 (or 2855242 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 48.

The spelling of 18844458600 in words is "eighteen billion, eight hundred forty-four million, four hundred fifty-eight thousand, six hundred".