18853368428 has 6 divisors (see below), whose sum is σ = 32993394756. Its totient is φ = 9426684212.

The previous prime is 18853368383. The next prime is 18853368439. The reversal of 18853368428 is 82486335881.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2356671050 + ... + 2356671057.

It is an arithmetic number, because the mean of its divisors is an integer number (5498899126).

Almost surely, 2^18853368428 is an apocalyptic number.

It is an amenable number.

18853368428 is a deficient number, since it is larger than the sum of its proper divisors (14140026328).

18853368428 is a wasteful number, since it uses less digits than its factorization.

18853368428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4713342111 (or 4713342109 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 56.

The spelling of 18853368428 in words is "eighteen billion, eight hundred fifty-three million, three hundred sixty-eight thousand, four hundred twenty-eight".