8638557159 has 8 divisors (see below), whose sum is σ = 11518561152. Its totient is φ = 5758795640.

The previous prime is 8638557139. The next prime is 8638557181. The reversal of 8638557159 is 9517558368.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8638557159 - 2¹¹ = 8638555111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8638557099 and 8638557108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8638557139) 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 7 ways as a sum of consecutive naturals, for example, 52864 + ... + 141674.

It is an arithmetic number, because the mean of its divisors is an integer number (1439820144).

Almost surely, 2^8638557159 is an apocalyptic number.

8638557159 is a deficient number, since it is larger than the sum of its proper divisors (2880003993).

8638557159 is a wasteful number, since it uses less digits than its factorization.

8638557159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121237.

The product of its digits is 9072000, while the sum is 57.

The square root of 8638557159 is about 92943.8387360884. The cubic root of 8638557159 is about 2051.8569063474.

The spelling of 8638557159 in words is "eight billion, six hundred thirty-eight million, five hundred fifty-seven thousand, one hundred fifty-nine".