3815812000 has 384 divisors, whose sum is σ = 12601225728. Its totient is φ = 1096704000.

The previous prime is 3815811997. The next prime is 3815812019. The reversal of 3815812000 is 2185183.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 3815812000.

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, 4003524 + ... + 4004476.

It is an arithmetic number, because the mean of its divisors is an integer number (32815692).

Almost surely, 2^3815812000 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 3815812000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6300612864).

3815812000 is an abundant number, since it is smaller than the sum of its proper divisors (8785413728).

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

3815812000 is a wasteful number, since it uses less digits than its factorization.

3815812000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 3815812000 is about 61772.2591459953. The cubic root of 3815812000 is about 1562.6521835772.

Adding to 3815812000 its reverse (2185183), we get a palindrome (3817997183).

The spelling of 3815812000 in words is "three billion, eight hundred fifteen million, eight hundred twelve thousand".