203920434938 has 32 divisors (see below), whose sum is σ = 338639045760. Its totient is φ = 91323232000.

The previous prime is 203920434937. The next prime is 203920434961. The reversal of 203920434938 is 839434029302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 203920434892 and 203920434901.

It is not an unprimeable number, because it can be changed into a prime (203920434937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364883 + ... + 735513.

It is an arithmetic number, because the mean of its divisors is an integer number (10582470180).

Almost surely, 2^203920434938 is an apocalyptic number.

203920434938 is a deficient number, since it is larger than the sum of its proper divisors (134718610822).

203920434938 is a wasteful number, since it uses less digits than its factorization.

203920434938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371014.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 203920434938 in words is "two hundred three billion, nine hundred twenty million, four hundred thirty-four thousand, nine hundred thirty-eight".