218146163 has 24 divisors (see below), whose sum is σ = 241255296. Its totient is φ = 196992000.

The previous prime is 218146157. The next prime is 218146189. The reversal of 218146163 is 361641812.

It is not a de Polignac number, because 218146163 - 2⁴ = 218146147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218146133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1130195 + ... + 1130387.

It is an arithmetic number, because the mean of its divisors is an integer number (10052304).

Almost surely, 2^218146163 is an apocalyptic number.

218146163 is a deficient number, since it is larger than the sum of its proper divisors (23109133).

218146163 is a wasteful number, since it uses less digits than its factorization.

218146163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 344 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 218146163 is about 14769.7719345967. The cubic root of 218146163 is about 601.9806425272.

Adding to 218146163 its reverse (361641812), we get a palindrome (579787975).

The spelling of 218146163 in words is "two hundred eighteen million, one hundred forty-six thousand, one hundred sixty-three".