18546286916 has 18 divisors (see below), whose sum is σ = 34254121230. Its totient is φ = 8785082592.

The previous prime is 18546286907. The next prime is 18546286919. The reversal of 18546286916 is 61968264581.

It can be written as a sum of positive squares in only one way, i.e., 16692640000 + 1853646916 = 129200^2 + 43054^2 .

It is not an unprimeable number, because it can be changed into a prime (18546286919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6420401 + ... + 6423288.

It is an arithmetic number, because the mean of its divisors is an integer number (1903006735).

Almost surely, 2^18546286916 is an apocalyptic number.

It is an amenable number.

18546286916 is a deficient number, since it is larger than the sum of its proper divisors (15707834314).

18546286916 is a wasteful number, since it uses less digits than its factorization.

18546286916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12843731 (or 12843710 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 56.

The spelling of 18546286916 in words is "eighteen billion, five hundred forty-six million, two hundred eighty-six thousand, nine hundred sixteen".