3122851820 has 48 divisors (see below), whose sum is σ = 7158848256. Its totient is φ = 1134840000.

The previous prime is 3122851819. The next prime is 3122851829. The reversal of 3122851820 is 281582213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3122851829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421145 + ... + 428495.

It is an arithmetic number, because the mean of its divisors is an integer number (149142672).

Almost surely, 2^3122851820 is an apocalyptic number.

It is an amenable number.

3122851820 is an abundant number, since it is smaller than the sum of its proper divisors (4035996436).

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

3122851820 is a wasteful number, since it uses less digits than its factorization.

3122851820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9302 (or 9300 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 3122851820 is about 55882.4822283334. The cubic root of 3122851820 is about 1461.6737887720.

The spelling of 3122851820 in words is "three billion, one hundred twenty-two million, eight hundred fifty-one thousand, eight hundred twenty".