18386414618 has 16 divisors (see below), whose sum is σ = 32401234656. Its totient is φ = 7714579440.

The previous prime is 18386414611. The next prime is 18386414653. The reversal of 18386414618 is 81641468381.

It is not an unprimeable number, because it can be changed into a prime (18386414611) 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, 32143796 + ... + 32144367.

It is an arithmetic number, because the mean of its divisors is an integer number (2025077166).

Almost surely, 2^18386414618 is an apocalyptic number.

18386414618 is a deficient number, since it is larger than the sum of its proper divisors (14014820038).

18386414618 is a wasteful number, since it uses less digits than its factorization.

18386414618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64288189.

The product of its digits is 884736, while the sum is 50.

The spelling of 18386414618 in words is "eighteen billion, three hundred eighty-six million, four hundred fourteen thousand, six hundred eighteen".