218804956 has 12 divisors (see below), whose sum is σ = 383033392. Its totient is φ = 109366848.

The previous prime is 218804947. The next prime is 218804959. The reversal of 218804956 is 659408812.

It is a happy number.

218804956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218804959) 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, 8836 + ... + 22708.

Almost surely, 2^218804956 is an apocalyptic number.

It is an amenable number.

218804956 is a deficient number, since it is larger than the sum of its proper divisors (164228436).

218804956 is a wasteful number, since it uses less digits than its factorization.

218804956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17820 (or 17818 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 218804956 is about 14792.0571929668. The cubic root of 218804956 is about 602.5860196392.

The spelling of 218804956 in words is "two hundred eighteen million, eight hundred four thousand, nine hundred fifty-six".