203430902838 has 16 divisors (see below), whose sum is σ = 406889865216. Its totient is φ = 67805624360.

The previous prime is 203430902821. The next prime is 203430902867. The reversal of 203430902838 is 838209034302.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 203430902838.

It is a congruent number.

It is an unprimeable number.

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, 1074306 + ... + 1249397.

It is an arithmetic number, because the mean of its divisors is an integer number (25430616576).

Almost surely, 2^203430902838 is an apocalyptic number.

203430902838 is an abundant number, since it is smaller than the sum of its proper divisors (203458962378).

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

203430902838 is a wasteful number, since it uses less digits than its factorization.

203430902838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338299.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 203430902838 in words is "two hundred three billion, four hundred thirty million, nine hundred two thousand, eight hundred thirty-eight".