18678780003 has 8 divisors (see below), whose sum is σ = 26820812368. Its totient is φ = 11494633824.

The previous prime is 18678779993. The next prime is 18678780007. The reversal of 18678780003 is 30008787681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18678780003 - 2⁸ = 18678779747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18678780007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239471500 + ... + 239471577.

It is an arithmetic number, because the mean of its divisors is an integer number (3352601546).

Almost surely, 2^18678780003 is an apocalyptic number.

18678780003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18678780003 is a deficient number, since it is larger than the sum of its proper divisors (8142032365).

18678780003 is a wasteful number, since it uses less digits than its factorization.

18678780003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478943093.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 18678780003 in words is "eighteen billion, six hundred seventy-eight million, seven hundred eighty thousand, three".