18818162514646 has 16 divisors (see below), whose sum is σ = 32414059834560. Its totient is φ = 8103514958280.

The previous prime is 18818162514583. The next prime is 18818162514659. The reversal of 18818162514646 is 64641526181881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22509763356 + ... + 22509764191.

It is an arithmetic number, because the mean of its divisors is an integer number (2025878739660).

Almost surely, 2^{18818162514646} is an apocalyptic number.

18818162514646 is a deficient number, since it is larger than the sum of its proper divisors (13595897319914).

18818162514646 is a wasteful number, since it uses less digits than its factorization.

18818162514646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45019527579.

The product of its digits is 17694720, while the sum is 61.

The spelling of 18818162514646 in words is "eighteen trillion, eight hundred eighteen billion, one hundred sixty-two million, five hundred fourteen thousand, six hundred forty-six".