3185694415868 has 24 divisors (see below), whose sum is σ = 5606723463264. Its totient is φ = 1583783409600.

The previous prime is 3185694415861. The next prime is 3185694415879. The reversal of 3185694415868 is 8685144965813.

It is a super-2 number, since 2×3185694415868² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3185694415798 and 3185694415807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3185694415861) 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, 30353 + ... + 2524343.

It is an arithmetic number, because the mean of its divisors is an integer number (233613477636).

Almost surely, 2^{3185694415868} is an apocalyptic number.

It is an amenable number.

3185694415868 is a deficient number, since it is larger than the sum of its proper divisors (2421029047396).

3185694415868 is a wasteful number, since it uses less digits than its factorization.

3185694415868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495813 (or 2495811 counting only the distinct ones).

The product of its digits is 199065600, while the sum is 68.

Subtracting 3185694415868 from its reverse (8685144965813), we obtain a palindrome (5499450549945).

The spelling of 3185694415868 in words is "three trillion, one hundred eighty-five billion, six hundred ninety-four million, four hundred fifteen thousand, eight hundred sixty-eight".