18275745 has 8 divisors (see below), whose sum is σ = 29241216. Its totient is φ = 9747056.

The previous prime is 18275737. The next prime is 18275779. The reversal of 18275745 is 54757281.

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 18275745 - 2³ = 18275737 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609177 + ... + 609206.

It is an arithmetic number, because the mean of its divisors is an integer number (3655152).

Almost surely, 2^18275745 is an apocalyptic number.

18275745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18275745 is a deficient number, since it is larger than the sum of its proper divisors (10965471).

18275745 is a wasteful number, since it uses less digits than its factorization.

18275745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218391.

The product of its digits is 78400, while the sum is 39.

The square root of 18275745 is about 4275.0140350647. The cubic root of 18275745 is about 263.4056158282.

The spelling of 18275745 in words is "eighteen million, two hundred seventy-five thousand, seven hundred forty-five".