18689204 has 6 divisors (see below), whose sum is σ = 32706114. Its totient is φ = 9344600.

The previous prime is 18689197. The next prime is 18689213. The reversal of 18689204 is 40298681.

It can be written as a sum of positive squares in only one way, i.e., 12588304 + 6100900 = 3548^2 + 2470^2 .

It is a super-3 number, since 3×18689204³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2336147 + ... + 2336154.

It is an arithmetic number, because the mean of its divisors is an integer number (5451019).

Almost surely, 2^18689204 is an apocalyptic number.

It is an amenable number.

18689204 is a deficient number, since it is larger than the sum of its proper divisors (14016910).

18689204 is a wasteful number, since it uses less digits than its factorization.

18689204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672305 (or 4672303 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 18689204 is about 4323.1012016838. The cubic root of 18689204 is about 265.3771963264.

The spelling of 18689204 in words is "eighteen million, six hundred eighty-nine thousand, two hundred four".