8542638179 has 4 divisors (see below), whose sum is σ = 8543768784. Its totient is φ = 8541507576.

The previous prime is 8542638161. The next prime is 8542638197. The reversal of 8542638179 is 9718362458.

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

It is an interprime number because it is at equal distance from previous prime (8542638161) and next prime (8542638197).

It is a cyclic number.

It is not a de Polignac number, because 8542638179 - 2³² = 4247670883 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 8542638179.

It is not an unprimeable number, because it can be changed into a prime (8542638119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553892 + ... + 569105.

It is an arithmetic number, because the mean of its divisors is an integer number (2135942196).

Almost surely, 2^8542638179 is an apocalyptic number.

8542638179 is a deficient number, since it is larger than the sum of its proper divisors (1130605).

8542638179 is a wasteful number, since it uses less digits than its factorization.

8542638179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130604.

The product of its digits is 2903040, while the sum is 53.

The square root of 8542638179 is about 92426.3933029954. The cubic root of 8542638179 is about 2044.2342989748.

The spelling of 8542638179 in words is "eight billion, five hundred forty-two million, six hundred thirty-eight thousand, one hundred seventy-nine".