18907786048 has 14 divisors (see below), whose sum is σ = 37520138066. Its totient is φ = 9453892992.

The previous prime is 18907786021. The next prime is 18907786061. The reversal of 18907786048 is 84068770981.

It can be written as a sum of positive squares in only one way, i.e., 11183485504 + 7724300544 = 105752^2 + 87888^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18907785983 and 18907786001.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 147717015 + ... + 147717142.

Almost surely, 2^18907786048 is an apocalyptic number.

It is an amenable number.

18907786048 is a deficient number, since it is larger than the sum of its proper divisors (18612352018).

18907786048 is an equidigital number, since it uses as much as digits as its factorization.

18907786048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295434169 (or 295434159 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 58.

The spelling of 18907786048 in words is "eighteen billion, nine hundred seven million, seven hundred eighty-six thousand, forty-eight".