18806853 has 8 divisors (see below), whose sum is σ = 27004768. Its totient is φ = 11573424.

The previous prime is 18806831. The next prime is 18806861. The reversal of 18806853 is 35860881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18806853 - 2²¹ = 16709701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 482227 = 18806853 / (1 + 8 + 8 + 0 + 6 + 8 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18806813) 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 7 ways as a sum of consecutive naturals, for example, 241075 + ... + 241152.

It is an arithmetic number, because the mean of its divisors is an integer number (3375596).

Almost surely, 2^18806853 is an apocalyptic number.

18806853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18806853 is a deficient number, since it is larger than the sum of its proper divisors (8197915).

18806853 is a wasteful number, since it uses less digits than its factorization.

18806853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482243.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 18806853 is about 4336.6868690280. The cubic root of 18806853 is about 265.9328839281.

The spelling of 18806853 in words is "eighteen million, eight hundred six thousand, eight hundred fifty-three".