3851621382 has 48 divisors (see below), whose sum is σ = 8967240000. Its totient is φ = 1099686672.

The previous prime is 3851621369. The next prime is 3851621383. The reversal of 3851621382 is 2831261583.

It is a self number, because there is not a number n which added to its sum of digits gives 3851621382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3851621383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 509869 + ... + 517367.

It is an arithmetic number, because the mean of its divisors is an integer number (186817500).

Almost surely, 2^3851621382 is an apocalyptic number.

3851621382 is an abundant number, since it is smaller than the sum of its proper divisors (5115618618).

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

3851621382 is a wasteful number, since it uses less digits than its factorization.

3851621382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9265 (or 9258 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 3851621382 is about 62061.4323231425. The cubic root of 3851621382 is about 1567.5251937171.

The spelling of 3851621382 in words is "three billion, eight hundred fifty-one million, six hundred twenty-one thousand, three hundred eighty-two".