3818665256 has 96 divisors (see below), whose sum is σ = 8847095400. Its totient is φ = 1535385600.

The previous prime is 3818665241. The next prime is 3818665283. The reversal of 3818665256 is 6525668183.

It can be written as a sum of positive squares in 4 ways, for example, as 3717340900 + 101324356 = 60970^2 + 10066^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2671550 + ... + 2672978.

Almost surely, 2^3818665256 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 3818665256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4423547700).

3818665256 is an abundant number, since it is smaller than the sum of its proper divisors (5028430144).

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

3818665256 is a wasteful number, since it uses less digits than its factorization.

3818665256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867 (or 1856 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 50.

The square root of 3818665256 is about 61795.3497926826. The cubic root of 3818665256 is about 1563.0415752165.

The spelling of 3818665256 in words is "three billion, eight hundred eighteen million, six hundred sixty-five thousand, two hundred fifty-six".