3681819039816 has 48 divisors (see below), whose sum is σ = 10496413933200. Its totient is φ = 1162679696352.

The previous prime is 3681819039803. The next prime is 3681819039817. The reversal of 3681819039816 is 6189309181863.

3681819039816 is a `hidden beast` number, since 3 + 6 + 81 + 81 + 90 + 398 + 1 + 6 = 666.

It is a super-2 number, since 2×3681819039816² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3681819039817) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1345692726 + ... + 1345695461.

It is an arithmetic number, because the mean of its divisors is an integer number (218675290275).

Almost surely, 2^{3681819039816} is an apocalyptic number.

3681819039816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3681819039816 is an abundant number, since it is smaller than the sum of its proper divisors (6814594893384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3681819039816 is a wasteful number, since it uses less digits than its factorization.

3681819039816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691388218 (or 2691388211 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The spelling of 3681819039816 in words is "three trillion, six hundred eighty-one billion, eight hundred nineteen million, thirty-nine thousand, eight hundred sixteen".