218163245 has 8 divisors (see below), whose sum is σ = 262394880. Its totient is φ = 174131280.

The previous prime is 218163241. The next prime is 218163251. The reversal of 218163245 is 542361812.

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

It is not a de Polignac number, because 218163245 - 2² = 218163241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218163241) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 47501 + ... + 51890.

It is an arithmetic number, because the mean of its divisors is an integer number (32799360).

Almost surely, 2^218163245 is an apocalyptic number.

It is an amenable number.

218163245 is a deficient number, since it is larger than the sum of its proper divisors (44231635).

218163245 is an equidigital number, since it uses as much as digits as its factorization.

218163245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99835.

The product of its digits is 11520, while the sum is 32.

The square root of 218163245 is about 14770.3501989628. The cubic root of 218163245 is about 601.9963548747.

The spelling of 218163245 in words is "two hundred eighteen million, one hundred sixty-three thousand, two hundred forty-five".