18050000000 has 216 divisors, whose sum is σ = 47438940555. Its totient is φ = 6840000000.

The previous prime is 18049999999. The next prime is 18050000029. The reversal of 18050000000 is 5081.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 17207142976 + 842857024 = 131176^2 + 29032^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=95000.

It is a self number, because there is not a number n which added to its sum of digits gives 18050000000.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 949999991 + ... + 950000009.

Almost surely, 2^18050000000 is an apocalyptic number.

18050000000 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 18050000000

18050000000 is an abundant number, since it is smaller than the sum of its proper divisors (29388940555).

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

18050000000 is an frugal number, since it uses more digits than its factorization.

18050000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 26 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 18050000000 its reverse (5081), we get a palindrome (18050005081).

The spelling of 18050000000 in words is "eighteen billion, fifty million", and thus it is an aban number and an uban number.