18840607028 has 12 divisors (see below), whose sum is σ = 33021098880. Its totient is φ = 9406007352.

The previous prime is 18840607001. The next prime is 18840607061. The reversal of 18840607028 is 82070604881.

It is a self number, because there is not a number n which added to its sum of digits gives 18840607028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571076 + ... + 3576347.

It is an arithmetic number, because the mean of its divisors is an integer number (2751758240).

Almost surely, 2^18840607028 is an apocalyptic number.

It is an amenable number.

18840607028 is a deficient number, since it is larger than the sum of its proper divisors (14180491852).

18840607028 is a wasteful number, since it uses less digits than its factorization.

18840607028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7148086 (or 7148084 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 18840607028 in words is "eighteen billion, eight hundred forty million, six hundred seven thousand, twenty-eight".