18478863705 has 8 divisors (see below), whose sum is σ = 29566181952. Its totient is φ = 9855393968.

The previous prime is 18478863679. The next prime is 18478863707. The reversal of 18478863705 is 50736887481.

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 18478863705 - 2¹⁰ = 18478862681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18478863707) 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, 615962109 + ... + 615962138.

It is an arithmetic number, because the mean of its divisors is an integer number (3695772744).

Almost surely, 2^18478863705 is an apocalyptic number.

18478863705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18478863705 is a deficient number, since it is larger than the sum of its proper divisors (11087318247).

18478863705 is a wasteful number, since it uses less digits than its factorization.

18478863705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231924255.

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 18478863705 in words is "eighteen billion, four hundred seventy-eight million, eight hundred sixty-three thousand, seven hundred five".