3818500521 has 8 divisors (see below), whose sum is σ = 5554182624. Its totient is φ = 2314242720.

The previous prime is 3818500507. The next prime is 3818500523. The reversal of 3818500521 is 1250058183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3818500521 - 2¹⁰ = 3818499497 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 115712137 = 3818500521 / (3 + 8 + 1 + 8 + 5 + 0 + 0 + 5 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (3818500523) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 57856036 + ... + 57856101.

It is an arithmetic number, because the mean of its divisors is an integer number (694272828).

Almost surely, 2^3818500521 is an apocalyptic number.

It is an amenable number.

3818500521 is a deficient number, since it is larger than the sum of its proper divisors (1735682103).

3818500521 is a wasteful number, since it uses less digits than its factorization.

3818500521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115712151.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 3818500521 is about 61794.0168705677. The cubic root of 3818500521 is about 1563.0190986582.

The spelling of 3818500521 in words is "three billion, eight hundred eighteen million, five hundred thousand, five hundred twenty-one".