18430853 has 16 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 15273600.

The previous prime is 18430849. The next prime is 18430861. The reversal of 18430853 is 35803481.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18430853 - 2² = 18430849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18430813) 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, 42548 + ... + 42978.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 2^18430853 is an apocalyptic number.

It is an amenable number.

18430853 is a deficient number, since it is larger than the sum of its proper divisors (3341947).

18430853 is a wasteful number, since it uses less digits than its factorization.

18430853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 18430853 is about 4293.1169329521. The cubic root of 18430853 is about 264.1487004713.

It can be divided in two parts, 1843085 and 3, that multiplied together give a palindrome (5529255).

The spelling of 18430853 in words is "eighteen million, four hundred thirty thousand, eight hundred fifty-three".