181838200203 has 36 divisors (see below), whose sum is σ = 288748671120. Its totient is φ = 110187776160.

The previous prime is 181838200147. The next prime is 181838200213. The reversal of 181838200203 is 302002838181.

It is not a de Polignac number, because 181838200203 - 2⁶ = 181838200139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (181838200213) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12388753 + ... + 12403421.

It is an arithmetic number, because the mean of its divisors is an integer number (8020796420).

Almost surely, 2^181838200203 is an apocalyptic number.

181838200203 is a deficient number, since it is larger than the sum of its proper divisors (106910470917).

181838200203 is a wasteful number, since it uses less digits than its factorization.

181838200203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26080 (or 26066 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 181838200203 in words is "one hundred eighty-one billion, eight hundred thirty-eight million, two hundred thousand, two hundred three".