18654883820 has 96 divisors (see below), whose sum is σ = 40594841280. Its totient is φ = 7197465600.

The previous prime is 18654883817. The next prime is 18654883843. The reversal of 18654883820 is 2838845681.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17450246 + ... + 17451314.

It is an arithmetic number, because the mean of its divisors is an integer number (422862930).

Almost surely, 2^18654883820 is an apocalyptic number.

18654883820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18654883820 is an abundant number, since it is smaller than the sum of its proper divisors (21939957460).

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

18654883820 is a wasteful number, since it uses less digits than its factorization.

18654883820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 1393 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 53.

The spelling of 18654883820 in words is "eighteen billion, six hundred fifty-four million, eight hundred eighty-three thousand, eight hundred twenty".