218853412 has 6 divisors (see below), whose sum is σ = 382993478. Its totient is φ = 109426704.

The previous prime is 218853389. The next prime is 218853469. The reversal of 218853412 is 214358812.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 195272676 + 23580736 = 13974^2 + 4856^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 27356673 + ... + 27356680.

Almost surely, 2^218853412 is an apocalyptic number.

It is an amenable number.

218853412 is a deficient number, since it is larger than the sum of its proper divisors (164140066).

218853412 is a wasteful number, since it uses less digits than its factorization.

218853412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54713357 (or 54713355 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 218853412 is about 14793.6950083473. The cubic root of 218853412 is about 602.6304987551.

The spelling of 218853412 in words is "two hundred eighteen million, eight hundred fifty-three thousand, four hundred twelve".