218868148 has 6 divisors (see below), whose sum is σ = 383019266. Its totient is φ = 109434072.

The previous prime is 218868113. The next prime is 218868173. The reversal of 218868148 is 841868812.

218868148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 218389284 + 478864 = 14778^2 + 692^2 .

It is a junction number, because it is equal to n+sod(n) for n = 218868098 and 218868107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27358515 + ... + 27358522.

Almost surely, 2^218868148 is an apocalyptic number.

It is an amenable number.

218868148 is a deficient number, since it is larger than the sum of its proper divisors (164151118).

218868148 is a wasteful number, since it uses less digits than its factorization.

218868148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54717041 (or 54717039 counting only the distinct ones).

The product of its digits is 196608, while the sum is 46.

The square root of 218868148 is about 14794.1930499774. The cubic root of 218868148 is about 602.6440240392.

The spelling of 218868148 in words is "two hundred eighteen million, eight hundred sixty-eight thousand, one hundred forty-eight".