1903394338 has 8 divisors (see below), whose sum is σ = 2855278188. Its totient is φ = 951634944.

The previous prime is 1903394303. The next prime is 1903394351. The reversal of 1903394338 is 8334933091.

It can be written as a sum of positive squares in 2 ways, for example, as 1668477409 + 234916929 = 40847^2 + 15327^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1903394294 and 1903394303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36570 + ... + 71722.

Almost surely, 2^1903394338 is an apocalyptic number.

1903394338 is a deficient number, since it is larger than the sum of its proper divisors (951883850).

1903394338 is a wasteful number, since it uses less digits than its factorization.

1903394338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62228.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 1903394338 is about 43627.9077884787. The cubic root of 1903394338 is about 1239.2994521092.

The spelling of 1903394338 in words is "one billion, nine hundred three million, three hundred ninety-four thousand, three hundred thirty-eight".