3822181820 has 12 divisors (see below), whose sum is σ = 8026581864. Its totient is φ = 1528872720.

The previous prime is 3822181819. The next prime is 3822181877. The reversal of 3822181820 is 281812283.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95554526 + ... + 95554565.

It is an arithmetic number, because the mean of its divisors is an integer number (668881822).

Almost surely, 2^3822181820 is an apocalyptic number.

It is an amenable number.

3822181820 is an abundant number, since it is smaller than the sum of its proper divisors (4204400044).

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

3822181820 is a wasteful number, since it uses less digits than its factorization.

3822181820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191109100 (or 191109098 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 3822181820 is about 61823.7965511663. The cubic root of 3822181820 is about 1563.5212235575.

The spelling of 3822181820 in words is "three billion, eight hundred twenty-two million, one hundred eighty-one thousand, eight hundred twenty".