3956520833 has 4 divisors (see below), whose sum is σ = 3963624660. Its totient is φ = 3949417008.

The previous prime is 3956520797. The next prime is 3956520853. The reversal of 3956520833 is 3380256593.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 628153969 + 3328366864 = 25063^2 + 57692^2 .

It is a cyclic number.

It is not a de Polignac number, because 3956520833 - 2²⁸ = 3688085377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3956520853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3551078 + ... + 3552191.

It is an arithmetic number, because the mean of its divisors is an integer number (990906165).

Almost surely, 2^3956520833 is an apocalyptic number.

It is an amenable number.

3956520833 is a deficient number, since it is larger than the sum of its proper divisors (7103827).

3956520833 is an equidigital number, since it uses as much as digits as its factorization.

3956520833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7103826.

The product of its (nonzero) digits is 583200, while the sum is 44.

The square root of 3956520833 is about 62900.8810192671. The cubic root of 3956520833 is about 1581.6285127845.

The spelling of 3956520833 in words is "three billion, nine hundred fifty-six million, five hundred twenty thousand, eight hundred thirty-three".