18790067018 has 4 divisors (see below), whose sum is σ = 28185100530. Its totient is φ = 9395033508.

The previous prime is 18790067017. The next prime is 18790067039. The reversal of 18790067018 is 81076009781.

18790067018 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17138213569 + 1651853449 = 130913^2 + 40643^2 .

It is not an unprimeable number, because it can be changed into a prime (18790067017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4697516753 + ... + 4697516756.

Almost surely, 2^18790067018 is an apocalyptic number.

18790067018 is a deficient number, since it is larger than the sum of its proper divisors (9395033512).

18790067018 is an equidigital number, since it uses as much as digits as its factorization.

18790067018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9395033511.

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 18790067018 in words is "eighteen billion, seven hundred ninety million, sixty-seven thousand, eighteen".