1818245 has 16 divisors (see below), whose sum is σ = 2564352. Its totient is φ = 1220160.

The previous prime is 1818241. The next prime is 1818277. The reversal of 1818245 is 5428181.

It is not a de Polignac number, because 1818245 - 2² = 1818241 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818241) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 557 + ... + 1986.

It is an arithmetic number, because the mean of its divisors is an integer number (160272).

2^1818245 is an apocalyptic number.

It is an amenable number.

1818245 is a deficient number, since it is larger than the sum of its proper divisors (746107).

1818245 is a wasteful number, since it uses less digits than its factorization.

1818245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572.

The product of its digits is 2560, while the sum is 29.

The square root of 1818245 is about 1348.4231531682. The cubic root of 1818245 is about 122.0536582025.

The spelling of 1818245 in words is "one million, eight hundred eighteen thousand, two hundred forty-five".