218229455 has 8 divisors (see below), whose sum is σ = 261958704. Its totient is φ = 174528000.

The previous prime is 218229449. The next prime is 218229467. The reversal of 218229455 is 554922812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 218229455 - 2⁴ = 218229439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19460 + ... + 28550.

It is an arithmetic number, because the mean of its divisors is an integer number (32744838).

Almost surely, 2^218229455 is an apocalyptic number.

218229455 is a deficient number, since it is larger than the sum of its proper divisors (43729249).

218229455 is an equidigital number, since it uses as much as digits as its factorization.

218229455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13897.

The product of its digits is 57600, while the sum is 38.

The square root of 218229455 is about 14772.5913434306. The cubic root of 218229455 is about 602.0572483388.

The spelling of 218229455 in words is "two hundred eighteen million, two hundred twenty-nine thousand, four hundred fifty-five".