18778063860 has 72 divisors (see below), whose sum is σ = 56975624160. Its totient is φ = 5006121408.

The previous prime is 18778063853. The next prime is 18778063861. The reversal of 18778063860 is 6836087781.

18778063860 is a `hidden beast` number, since 187 + 7 + 80 + 6 + 386 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18778063797 and 18778063806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18778063861) 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 23 ways as a sum of consecutive naturals, for example, 768999 + ... + 793041.

Almost surely, 2^18778063860 is an apocalyptic number.

18778063860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18778063860 is an abundant number, since it is smaller than the sum of its proper divisors (38197560300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18778063860 is a wasteful number, since it uses less digits than its factorization.

18778063860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28397 (or 28392 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 18778063860 in words is "eighteen billion, seven hundred seventy-eight million, sixty-three thousand, eight hundred sixty".