18258145 has 8 divisors (see below), whose sum is σ = 23063040. Its totient is φ = 13837680.

The previous prime is 18258143. The next prime is 18258151. The reversal of 18258145 is 54185281.

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

It is not a de Polignac number, because 18258145 - 2¹ = 18258143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18258145.

It is not an unprimeable number, because it can be changed into a prime (18258143) by changing a digit.

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, 96001 + ... + 96190.

It is an arithmetic number, because the mean of its divisors is an integer number (2882880).

Almost surely, 2^18258145 is an apocalyptic number.

It is an amenable number.

18258145 is a deficient number, since it is larger than the sum of its proper divisors (4804895).

18258145 is a wasteful number, since it uses less digits than its factorization.

18258145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192215.

The product of its digits is 12800, while the sum is 34.

The square root of 18258145 is about 4272.9550664616. The cubic root of 18258145 is about 263.3210332698.

The spelling of 18258145 in words is "eighteen million, two hundred fifty-eight thousand, one hundred forty-five".