18106853 has 4 divisors (see below), whose sum is σ = 19171980. Its totient is φ = 17041728.

The previous prime is 18106849. The next prime is 18106873. The reversal of 18106853 is 35860181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35860181 = 7 ⋅5122883.

It can be written as a sum of positive squares in 2 ways, for example, as 8076964 + 10029889 = 2842^2 + 3167^2 .

It is a cyclic number.

It is not a de Polignac number, because 18106853 - 2² = 18106849 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 (18106843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532538 + ... + 532571.

It is an arithmetic number, because the mean of its divisors is an integer number (4792995).

Almost surely, 2^18106853 is an apocalyptic number.

It is an amenable number.

18106853 is a deficient number, since it is larger than the sum of its proper divisors (1065127).

18106853 is a wasteful number, since it uses less digits than its factorization.

18106853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065126.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 18106853 is about 4255.2148006887. The cubic root of 18106853 is about 262.5916982735.

The spelling of 18106853 in words is "eighteen million, one hundred six thousand, eight hundred fifty-three".