3858597820 has 192 divisors, whose sum is σ = 10332241920. Its totient is φ = 1175731200.

The previous prime is 3858597803. The next prime is 3858597851. The reversal of 3858597820 is 287958583.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21318130 + ... + 21318310.

It is an arithmetic number, because the mean of its divisors is an integer number (53813760).

Almost surely, 2^3858597820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3858597820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5166120960).

3858597820 is an abundant number, since it is smaller than the sum of its proper divisors (6473644100).

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

3858597820 is a wasteful number, since it uses less digits than its factorization.

3858597820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The square root of 3858597820 is about 62117.6128002357. The cubic root of 3858597820 is about 1568.4710418199.

The spelling of 3858597820 in words is "three billion, eight hundred fifty-eight million, five hundred ninety-seven thousand, eight hundred twenty".