18412803 has 18 divisors (see below), whose sum is σ = 27089244. Its totient is φ = 12050064.

The previous prime is 18412777. The next prime is 18412817. The reversal of 18412803 is 30821481.

It is not a de Polignac number, because 18412803 - 2⁹ = 18412291 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18412103) 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 17 ways as a sum of consecutive naturals, for example, 117201 + ... + 117357.

It is an arithmetic number, because the mean of its divisors is an integer number (1504958).

Almost surely, 2^18412803 is an apocalyptic number.

18412803 is a deficient number, since it is larger than the sum of its proper divisors (8676441).

18412803 is an equidigital number, since it uses as much as digits as its factorization.

18412803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 18412803 is about 4291.0142157770. The cubic root of 18412803 is about 264.0624421857.

The spelling of 18412803 in words is "eighteen million, four hundred twelve thousand, eight hundred three".