3185683598813 has 4 divisors (see below), whose sum is σ = 3185687177820. Its totient is φ = 3185680019808.

The previous prime is 3185683598809. The next prime is 3185683598821. The reversal of 3185683598813 is 3188953865813.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 293653442404 + 2892030156409 = 541898^2 + 1700597^2 .

It is a cyclic number.

It is not a de Polignac number, because 3185683598813 - 2² = 3185683598809 is a prime.

It is a super-2 number, since 2×3185683598813² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3185683598833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701273 + ... + 2619761.

It is an arithmetic number, because the mean of its divisors is an integer number (796421794455).

Almost surely, 2^{3185683598813} is an apocalyptic number.

It is an amenable number.

3185683598813 is a deficient number, since it is larger than the sum of its proper divisors (3579007).

3185683598813 is a wasteful number, since it uses less digits than its factorization.

3185683598813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579006.

The product of its digits is 149299200, while the sum is 68.

The spelling of 3185683598813 in words is "three trillion, one hundred eighty-five billion, six hundred eighty-three million, five hundred ninety-eight thousand, eight hundred thirteen".