3818785000 has 40 divisors (see below), whose sum is σ = 8947424970. Its totient is φ = 1527512000.

The previous prime is 3818784943. The next prime is 3818785001. The reversal of 3818785000 is 5878183.

It can be written as a sum of positive squares in 5 ways, for example, as 173765124 + 3645019876 = 13182^2 + 60374^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (3818785001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 376879 + ... + 386878.

Almost surely, 2^3818785000 is an apocalyptic number.

It is an amenable number.

3818785000 is an abundant number, since it is smaller than the sum of its proper divisors (5128639970).

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

3818785000 is an equidigital number, since it uses as much as digits as its factorization.

3818785000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763783 (or 763764 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 3818785000 is about 61796.3186605804. The cubic root of 3818785000 is about 1563.0579127656.

The spelling of 3818785000 in words is "three billion, eight hundred eighteen million, seven hundred eighty-five thousand".