203430010018 has 16 divisors (see below), whose sum is σ = 309355092576. Its totient is φ = 100311916320.

The previous prime is 203430010013. The next prime is 203430010019. The reversal of 203430010018 is 810010034302.

It is not an unprimeable number, because it can be changed into a prime (203430010013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1579513 + ... + 1703443.

It is an arithmetic number, because the mean of its divisors is an integer number (19334693286).

Almost surely, 2^203430010018 is an apocalyptic number.

203430010018 is a deficient number, since it is larger than the sum of its proper divisors (105925082558).

203430010018 is a wasteful number, since it uses less digits than its factorization.

203430010018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135249.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 203430010018 in words is "two hundred three billion, four hundred thirty million, ten thousand, eighteen".