3185817861368 has 32 divisors (see below), whose sum is σ = 5994801867600. Its totient is φ = 1587209820672.

The previous prime is 3185817861361. The next prime is 3185817861469. The reversal of 3185817861368 is 8631687185813.

It is a super-2 number, since 2×3185817861368² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3185817861361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4052423 + ... + 4774281.

Almost surely, 2^{3185817861368} is an apocalyptic number.

It is an amenable number.

3185817861368 is a deficient number, since it is larger than the sum of its proper divisors (2808984006232).

3185817861368 is a wasteful number, since it uses less digits than its factorization.

3185817861368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723839 (or 723835 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 65.

The spelling of 3185817861368 in words is "three trillion, one hundred eighty-five billion, eight hundred seventeen million, eight hundred sixty-one thousand, three hundred sixty-eight".