18065203200 has 882 divisors, whose sum is σ = 73828990137. Its totient is φ = 4379443200.

The previous prime is 18065203199. The next prime is 18065203207. The reversal of 18065203200 is 230256081.

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.

18065203200 is a `hidden beast` number, since 1 + 8 + 0 + 652 + 0 + 3 + 2 + 0 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17703899136 + 361304064 = 133056^2 + 19008^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=95040.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18065203207) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 1642291195 + ... + 1642291205.

Almost surely, 2^18065203200 is an apocalyptic number.

18065203200 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 18065203200

18065203200 is an abundant number, since it is smaller than the sum of its proper divisors (55763786937).

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

18065203200 is an frugal number, since it uses more digits than its factorization.

18065203200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 18065203200 its reverse (230256081), we get a palindrome (18295459281).

The spelling of 18065203200 in words is "eighteen billion, sixty-five million, two hundred three thousand, two hundred".