18479853 has 16 divisors (see below), whose sum is σ = 31288960. Its totient is φ = 10559808.

The previous prime is 18479849. The next prime is 18479861. The reversal of 18479853 is 35897481.

It is not a de Polignac number, because 18479853 - 2² = 18479849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18479799 and 18479808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18479893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48700 + ... + 49077.

It is an arithmetic number, because the mean of its divisors is an integer number (1955560).

Almost surely, 2^18479853 is an apocalyptic number.

It is an amenable number.

18479853 is a deficient number, since it is larger than the sum of its proper divisors (12809107).

18479853 is an equidigital number, since it uses as much as digits as its factorization.

18479853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97793 (or 97787 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 18479853 is about 4298.8199543596. The cubic root of 18479853 is about 264.3825806387.

The spelling of 18479853 in words is "eighteen million, four hundred seventy-nine thousand, eight hundred fifty-three".