18960085865 has 8 divisors (see below), whose sum is σ = 26002403520. Its totient is φ = 13001201712.

The previous prime is 18960085849. The next prime is 18960085877. The reversal of 18960085865 is 56858006981.

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 18960085865 - 2⁴ = 18960085849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18960085865.

It is an unprimeable number.

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, 270858335 + ... + 270858404.

It is an arithmetic number, because the mean of its divisors is an integer number (3250300440).

Almost surely, 2^18960085865 is an apocalyptic number.

It is an amenable number.

18960085865 is a deficient number, since it is larger than the sum of its proper divisors (7042317655).

18960085865 is an equidigital number, since it uses as much as digits as its factorization.

18960085865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541716751.

The product of its (nonzero) digits is 4147200, while the sum is 56.

The spelling of 18960085865 in words is "eighteen billion, nine hundred sixty million, eighty-five thousand, eight hundred sixty-five".