218163076 has 12 divisors (see below), whose sum is σ = 381890572. Its totient is φ = 109051488.

The previous prime is 218163067. The next prime is 218163083. The reversal of 218163076 is 670361812.

It can be written as a sum of positive squares in 2 ways, for example, as 130553476 + 87609600 = 11426^2 + 9360^2 .

It is an alternating number because its digits alternate between even and odd.

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 in 3 ways as a sum of consecutive naturals, for example, 20086 + ... + 28978.

Almost surely, 2^218163076 is an apocalyptic number.

It is an amenable number.

218163076 is a deficient number, since it is larger than the sum of its proper divisors (163727496).

218163076 is a wasteful number, since it uses less digits than its factorization.

218163076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15030 (or 15028 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 218163076 is about 14770.3444780411. The cubic root of 218163076 is about 601.9961994293.

The spelling of 218163076 in words is "two hundred eighteen million, one hundred sixty-three thousand, seventy-six".