203494102189 has 12 divisors (see below), whose sum is σ = 237307970268. Its totient is φ = 173988528000.

The previous prime is 203494102181. The next prime is 203494102223. The reversal of 203494102189 is 981201494302.

203494102189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 160707179689 + 42786922500 = 400883^2 + 206850^2 .

It is not a de Polignac number, because 203494102189 - 2³ = 203494102181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203494102181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5158582 + ... + 5197879.

It is an arithmetic number, because the mean of its divisors is an integer number (19775664189).

Almost surely, 2^203494102189 is an apocalyptic number.

It is an amenable number.

203494102189 is a deficient number, since it is larger than the sum of its proper divisors (33813868079).

203494102189 is a wasteful number, since it uses less digits than its factorization.

203494102189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10356876 (or 10356869 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 203494102189 in words is "two hundred three billion, four hundred ninety-four million, one hundred two thousand, one hundred eighty-nine".