18843536064 has 224 divisors, whose sum is σ = 53474112000. Its totient is φ = 5839257600.

The previous prime is 18843536059. The next prime is 18843536077. The reversal of 18843536064 is 46063534881.

It is a super-2 number, since 2×18843536064² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 73321024 + ... + 73321280.

Almost surely, 2^18843536064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18843536064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26737056000).

18843536064 is an abundant number, since it is smaller than the sum of its proper divisors (34630575936).

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

18843536064 is a wasteful number, since it uses less digits than its factorization.

18843536064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 18843536064 in words is "eighteen billion, eight hundred forty-three million, five hundred thirty-six thousand, sixty-four".