18895728546 has 16 divisors (see below), whose sum is σ = 41990508000. Its totient is φ = 6298576164.

The previous prime is 18895728539. The next prime is 18895728559. The reversal of 18895728546 is 64582759881.

18895728546 is a `hidden beast` number, since 1 + 8 + 8 + 9 + 572 + 8 + 54 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174960396 + ... + 174960503.

It is an arithmetic number, because the mean of its divisors is an integer number (2624406750).

Almost surely, 2^18895728546 is an apocalyptic number.

18895728546 is an abundant number, since it is smaller than the sum of its proper divisors (23094779454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18895728546 is a wasteful number, since it uses less digits than its factorization.

18895728546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349920910 (or 349920904 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 63.

The spelling of 18895728546 in words is "eighteen billion, eight hundred ninety-five million, seven hundred twenty-eight thousand, five hundred forty-six".