813804503338 has 4 divisors (see below), whose sum is σ = 1220706755010. Its totient is φ = 406902251668.

The previous prime is 813804503269. The next prime is 813804503341. The reversal of 813804503338 is 833305408318.

813804503338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 457499373769 + 356305129569 = 676387^2 + 596913^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203451125833 + ... + 203451125836.

Almost surely, 2^813804503338 is an apocalyptic number.

813804503338 is a deficient number, since it is larger than the sum of its proper divisors (406902251672).

813804503338 is a wasteful number, since it uses less digits than its factorization.

813804503338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406902251671.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 813804503338 in words is "eight hundred thirteen billion, eight hundred four million, five hundred three thousand, three hundred thirty-eight".