3818786697728 has 90 divisors (see below), whose sum is σ = 7751710610721. Its totient is φ = 1879435751424.

The previous prime is 3818786697689. The next prime is 3818786697743. The reversal of 3818786697728 is 8277966878183.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 3403700287744 + 415086409984 = 1844912^2 + 644272^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1381808.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 2962595708 + ... + 2962596996.

Almost surely, 2^{3818786697728} 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 3818786697728

3818786697728 is an abundant number, since it is smaller than the sum of its proper divisors (3932923912993).

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

3818786697728 is an frugal number, since it uses more digits than its factorization.

3818786697728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730 (or 1358 counting only the distinct ones).

The product of its digits is 2731180032, while the sum is 80.

The spelling of 3818786697728 in words is "three trillion, eight hundred eighteen billion, seven hundred eighty-six million, six hundred ninety-seven thousand, seven hundred twenty-eight".