8626438057 has 4 divisors (see below), whose sum is σ = 8626662100. Its totient is φ = 8626214016.

The previous prime is 8626438033. The next prime is 8626438063. The reversal of 8626438057 is 7508346268.

8626438057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3858397456 + 4768040601 = 62116^2 + 69051^2 .

It is a cyclic number.

It is not a de Polignac number, because 8626438057 - 2⁷ = 8626437929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8626438057.

It is not an unprimeable number, because it can be changed into a prime (8626438157) 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 3 ways as a sum of consecutive naturals, for example, 37932 + ... + 136717.

It is an arithmetic number, because the mean of its divisors is an integer number (2156665525).

Almost surely, 2^8626438057 is an apocalyptic number.

It is an amenable number.

8626438057 is a deficient number, since it is larger than the sum of its proper divisors (224043).

8626438057 is a wasteful number, since it uses less digits than its factorization.

8626438057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224042.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The square root of 8626438057 is about 92878.6200209715. The cubic root of 8626438057 is about 2050.8969350505.

The spelling of 8626438057 in words is "eight billion, six hundred twenty-six million, four hundred thirty-eight thousand, fifty-seven".