218041804 has 6 divisors (see below), whose sum is σ = 381573164. Its totient is φ = 109020900.

The previous prime is 218041801. The next prime is 218041819. The reversal of 218041804 is 408140812.

It is not an unprimeable number, because it can be changed into a prime (218041801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27255222 + ... + 27255229.

Almost surely, 2^218041804 is an apocalyptic number.

It is an amenable number.

218041804 is a deficient number, since it is larger than the sum of its proper divisors (163531360).

218041804 is a wasteful number, since it uses less digits than its factorization.

218041804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54510455 (or 54510453 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 218041804 is about 14766.2386544441. The cubic root of 218041804 is about 601.8846333232.

The spelling of 218041804 in words is "two hundred eighteen million, forty-one thousand, eight hundred four".