18659346572 has 12 divisors (see below), whose sum is σ = 32657131416. Its totient is φ = 9328737600.

The previous prime is 18659346569. The next prime is 18659346577. The reversal of 18659346572 is 27564395681.

It is not an unprimeable number, because it can be changed into a prime (18659346577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188054 + ... + 269597.

It is an arithmetic number, because the mean of its divisors is an integer number (2721427618).

Almost surely, 2^18659346572 is an apocalyptic number.

It is an amenable number.

18659346572 is a deficient number, since it is larger than the sum of its proper divisors (13997784844).

18659346572 is a wasteful number, since it uses less digits than its factorization.

18659346572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467848 (or 467846 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 56.

The spelling of 18659346572 in words is "eighteen billion, six hundred fifty-nine million, three hundred forty-six thousand, five hundred seventy-two".