18075205 has 8 divisors (see below), whose sum is σ = 21715704. Its totient is φ = 14443200.

The previous prime is 18075191. The next prime is 18075209. The reversal of 18075205 is 50257081.

It can be written as a sum of positive squares in 4 ways, for example, as 10246401 + 7828804 = 3201^2 + 2798^2 .

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

It is not a de Polignac number, because 18075205 - 2¹³ = 18067013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18075209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4375 + ... + 7435.

It is an arithmetic number, because the mean of its divisors is an integer number (2714463).

Almost surely, 2^18075205 is an apocalyptic number.

It is an amenable number.

18075205 is a deficient number, since it is larger than the sum of its proper divisors (3640499).

18075205 is a wasteful number, since it uses less digits than its factorization.

18075205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 18075205 is about 4251.4944431341. The cubic root of 18075205 is about 262.4386190572.

The spelling of 18075205 in words is "eighteen million, seventy-five thousand, two hundred five".