18734584375859 has 8 divisors (see below), whose sum is σ = 20446988848128. Its totient is φ = 17023723309960.

The previous prime is 18734584375757. The next prime is 18734584375861. The reversal of 18734584375859 is 95857348543781.

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 18734584375859 - 2⁸ = 18734584375603 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 18734584375859.

It is not an unprimeable number, because it can be changed into a prime (18734584315859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385826207 + ... + 385874760.

It is an arithmetic number, because the mean of its divisors is an integer number (2555873606016).

Almost surely, 2^{18734584375859} is an apocalyptic number.

18734584375859 is a deficient number, since it is larger than the sum of its proper divisors (1712404472269).

18734584375859 is a wasteful number, since it uses less digits than its factorization.

18734584375859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771703185.

The product of its digits is 4064256000, while the sum is 77.

The spelling of 18734584375859 in words is "eighteen trillion, seven hundred thirty-four billion, five hundred eighty-four million, three hundred seventy-five thousand, eight hundred fifty-nine".