18382004 has 12 divisors (see below), whose sum is σ = 32199300. Its totient is φ = 9182208.

The previous prime is 18382003. The next prime is 18382019. The reversal of 18382004 is 40028381.

It can be written as a sum of positive squares in 2 ways, for example, as 1817104 + 16564900 = 1348^2 + 4070^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18382003) 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, 5492 + ... + 8180.

It is an arithmetic number, because the mean of its divisors is an integer number (2683275).

Almost surely, 2^18382004 is an apocalyptic number.

It is an amenable number.

18382004 is a deficient number, since it is larger than the sum of its proper divisors (13817296).

18382004 is a wasteful number, since it uses less digits than its factorization.

18382004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402 (or 4400 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18382004 is about 4287.4239351853. The cubic root of 18382004 is about 263.9151280592.

The spelling of 18382004 in words is "eighteen million, three hundred eighty-two thousand, four".