1903683939093 has 20 divisors (see below), whose sum is σ = 2843986239468. Its totient is φ = 1269028252800.

The previous prime is 1903683939083. The next prime is 1903683939121. The reversal of 1903683939093 is 3909393863091.

1903683939093 is a `hidden beast` number, since 19 + 0 + 3 + 68 + 393 + 90 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 610737561009 + 1292946378084 = 781497^2 + 1137078^2 .

It is not a de Polignac number, because 1903683939093 - 2¹⁰ = 1903683938069 is a prime.

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 1903683939093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1903683939023) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 230743 + ... + 1964843.

Almost surely, 2^{1903683939093} is an apocalyptic number.

It is an amenable number.

1903683939093 is a deficient number, since it is larger than the sum of its proper divisors (940302300375).

1903683939093 is a wasteful number, since it uses less digits than its factorization.

1903683939093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747666 (or 1747657 counting only the distinct ones).

The product of its (nonzero) digits is 25509168, while the sum is 63.

The spelling of 1903683939093 in words is "one trillion, nine hundred three billion, six hundred eighty-three million, nine hundred thirty-nine thousand, ninety-three".