3822681816 has 128 divisors (see below), whose sum is σ = 10873958400. Its totient is φ = 1243831680.

The previous prime is 3822681773. The next prime is 3822681823. The reversal of 3822681816 is 6181862283.

3822681816 is a `hidden beast` number, since 382 + 268 + 1 + 8 + 1 + 6 = 666.

It is a super-2 number, since 2×3822681816² = 29225792532754115712, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2597961 + ... + 2599431.

It is an arithmetic number, because the mean of its divisors is an integer number (84952800).

Almost surely, 2^3822681816 is an apocalyptic number.

3822681816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3822681816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5436979200).

3822681816 is an abundant number, since it is smaller than the sum of its proper divisors (7051276584).

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

3822681816 is a wasteful number, since it uses less digits than its factorization.

3822681816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1756 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 3822681816 is about 61827.8401369480. The cubic root of 3822681816 is about 1563.5893975576.

The spelling of 3822681816 in words is "three billion, eight hundred twenty-two million, six hundred eighty-one thousand, eight hundred sixteen".