18942853 has 12 divisors (see below), whose sum is σ = 19804932. Its totient is φ = 18115200.

The previous prime is 18942851. The next prime is 18942883. The reversal of 18942853 is 35824981.

It can be written as a sum of positive squares in 6 ways, for example, as 9597604 + 9345249 = 3098^2 + 3057^2 .

It is not a de Polignac number, because 18942853 - 2¹ = 18942851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18942851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138201 + ... + 138337.

It is an arithmetic number, because the mean of its divisors is an integer number (1650411).

Almost surely, 2^18942853 is an apocalyptic number.

It is an amenable number.

18942853 is a deficient number, since it is larger than the sum of its proper divisors (862079).

18942853 is a wasteful number, since it uses less digits than its factorization.

18942853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 275 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 18942853 is about 4352.3387965552. The cubic root of 18942853 is about 266.5723678732.

The spelling of 18942853 in words is "eighteen million, nine hundred forty-two thousand, eight hundred fifty-three".