3862187821 has 8 divisors (see below), whose sum is σ = 3898592000. Its totient is φ = 3825954000.

The previous prime is 3862187801. The next prime is 3862187827. The reversal of 3862187821 is 1287812683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3862187821 - 2⁹ = 3862187309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3862187827) 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 7 ways as a sum of consecutive naturals, for example, 3196 + ... + 87946.

It is an arithmetic number, because the mean of its divisors is an integer number (487324000).

Almost surely, 2^3862187821 is an apocalyptic number.

It is an amenable number.

3862187821 is a deficient number, since it is larger than the sum of its proper divisors (36404179).

3862187821 is a wasteful number, since it uses less digits than its factorization.

3862187821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85179.

The product of its digits is 258048, while the sum is 46.

The square root of 3862187821 is about 62146.5028863250. The cubic root of 3862187821 is about 1568.9573209891.

The spelling of 3862187821 in words is "three billion, eight hundred sixty-two million, one hundred eighty-seven thousand, eight hundred twenty-one".