18125853 has 4 divisors (see below), whose sum is σ = 24167808. Its totient is φ = 12083900.

The previous prime is 18125843. The next prime is 18125857. The reversal of 18125853 is 35852181.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18125853 - 2²⁴ = 1348637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18125857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3020973 + ... + 3020978.

It is an arithmetic number, because the mean of its divisors is an integer number (6041952).

Almost surely, 2^18125853 is an apocalyptic number.

It is an amenable number.

18125853 is a deficient number, since it is larger than the sum of its proper divisors (6041955).

18125853 is an equidigital number, since it uses as much as digits as its factorization.

18125853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041954.

The product of its digits is 9600, while the sum is 33.

The square root of 18125853 is about 4257.4467700724. The cubic root of 18125853 is about 262.6835143052.

The spelling of 18125853 in words is "eighteen million, one hundred twenty-five thousand, eight hundred fifty-three".