18653245 has 8 divisors (see below), whose sum is σ = 24105816. Its totient is φ = 13774656.

The previous prime is 18653213. The next prime is 18653273. The reversal of 18653245 is 54235681.

It can be written as a sum of positive squares in 4 ways, for example, as 488601 + 18164644 = 699^2 + 4262^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 18653245 - 2⁵ = 18653213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18653245.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 143422 + ... + 143551.

It is an arithmetic number, because the mean of its divisors is an integer number (3013227).

Almost surely, 2^18653245 is an apocalyptic number.

It is an amenable number.

18653245 is a deficient number, since it is larger than the sum of its proper divisors (5452571).

18653245 is a wasteful number, since it uses less digits than its factorization.

18653245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286991.

The product of its digits is 28800, while the sum is 34.

The square root of 18653245 is about 4318.9402635369. The cubic root of 18653245 is about 265.2068872116.

The spelling of 18653245 in words is "eighteen million, six hundred fifty-three thousand, two hundred forty-five".