1803808 has 12 divisors (see below), whose sum is σ = 3551310. Its totient is φ = 901888.

The previous prime is 1803799. The next prime is 1803811. The reversal of 1803808 is 8083081.

It can be written as a sum of positive squares in only one way, i.e., 1774224 + 29584 = 1332^2 + 172^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28153 + ... + 28216.

2^1803808 is an apocalyptic number.

It is an amenable number.

1803808 is a deficient number, since it is larger than the sum of its proper divisors (1747502).

1803808 is an equidigital number, since it uses as much as digits as its factorization.

1803808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56379 (or 56371 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1803808 is about 1343.0591945257. The cubic root of 1803808 is about 121.7297610654.

Adding to 1803808 its reverse (8083081), we get a palindrome (9886889).

The spelling of 1803808 in words is "one million, eight hundred three thousand, eight hundred eight".