203909301930 has 16 divisors (see below), whose sum is σ = 489382324704. Its totient is φ = 54375813840.

The previous prime is 203909301913. The next prime is 203909301943. The reversal of 203909301930 is 39103909302.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3398488336 + ... + 3398488395.

It is an arithmetic number, because the mean of its divisors is an integer number (30586395294).

Almost surely, 2^203909301930 is an apocalyptic number.

203909301930 is an abundant number, since it is smaller than the sum of its proper divisors (285473022774).

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

203909301930 is a wasteful number, since it uses less digits than its factorization.

203909301930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6796976741.

The product of its (nonzero) digits is 39366, while the sum is 39.

The spelling of 203909301930 in words is "two hundred three billion, nine hundred nine million, three hundred one thousand, nine hundred thirty".