18642876689 has 8 divisors (see below), whose sum is σ = 19355503872. Its totient is φ = 17937202320.

The previous prime is 18642876667. The next prime is 18642876731. The reversal of 18642876689 is 98667824681.

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 18642876689 - 2⁸ = 18642876433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18642876089) 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, 1732739 + ... + 1743464.

It is an arithmetic number, because the mean of its divisors is an integer number (2419437984).

Almost surely, 2^18642876689 is an apocalyptic number.

It is an amenable number.

18642876689 is a deficient number, since it is larger than the sum of its proper divisors (712627183).

18642876689 is a wasteful number, since it uses less digits than its factorization.

18642876689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476407.

The product of its digits is 55738368, while the sum is 65.

The spelling of 18642876689 in words is "eighteen billion, six hundred forty-two million, eight hundred seventy-six thousand, six hundred eighty-nine".