2003818 has 8 divisors (see below), whose sum is σ = 3017412. Its totient is φ = 998016.

The previous prime is 2003803. The next prime is 2003819. The reversal of 2003818 is 8183002.

It can be written as a sum of positive squares in 2 ways, for example, as 1481089 + 522729 = 1217^2 + 723^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2003819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255 + ... + 2362.

2^2003818 is an apocalyptic number.

2003818 is a deficient number, since it is larger than the sum of its proper divisors (1013594).

2003818 is a wasteful number, since it uses less digits than its factorization.

2003818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 2003818 is about 1415.5627856086. The cubic root of 2003818 is about 126.0722270029.

The spelling of 2003818 in words is "two million, three thousand, eight hundred eighteen".