20182018203 has 24 divisors (see below), whose sum is σ = 29572539360. Its totient is φ = 13261812480.

The previous prime is 20182018201. The next prime is 20182018229. The reversal of 20182018203 is 30281028102.

It is not a de Polignac number, because 20182018203 - 2¹ = 20182018201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20182018201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129258 + ... + 238896.

It is an arithmetic number, because the mean of its divisors is an integer number (1232189140).

Almost surely, 2^20182018203 is an apocalyptic number.

20182018203 is a deficient number, since it is larger than the sum of its proper divisors (9390521157).

20182018203 is a wasteful number, since it uses less digits than its factorization.

20182018203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109939 (or 109936 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The spelling of 20182018203 in words is "twenty billion, one hundred eighty-two million, eighteen thousand, two hundred three".