18546046864 has 20 divisors (see below), whose sum is σ = 35937990000. Its totient is φ = 9271726880.

The previous prime is 18546046829. The next prime is 18546046867. The reversal of 18546046864 is 46864064581.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18546046867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42699 + ... + 197269.

It is an arithmetic number, because the mean of its divisors is an integer number (1796899500).

Almost surely, 2^18546046864 is an apocalyptic number.

It is an amenable number.

18546046864 is a deficient number, since it is larger than the sum of its proper divisors (17391943136).

18546046864 is a wasteful number, since it uses less digits than its factorization.

18546046864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162078 (or 162072 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 52.

It can be divided in two parts, 185460 and 46864, that added together give a square (232324 = 482²).

The spelling of 18546046864 in words is "eighteen billion, five hundred forty-six million, forty-six thousand, eight hundred sixty-four".