18205000944 has 160 divisors (see below), whose sum is σ = 52135663104. Its totient is φ = 5439329280.

The previous prime is 18205000927. The next prime is 18205000949. The reversal of 18205000944 is 44900050281.

It is a super-2 number, since 2×18205000944² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18205000949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2965302 + ... + 2971434.

Almost surely, 2^18205000944 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 18205000944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26067831552).

18205000944 is an abundant number, since it is smaller than the sum of its proper divisors (33930662160).

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

18205000944 is a wasteful number, since it uses less digits than its factorization.

18205000944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295 (or 6289 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 18205000944 in words is "eighteen billion, two hundred five million, nine hundred forty-four", and thus it is an aban number.