220018868 has 6 divisors (see below), whose sum is σ = 385033026. Its totient is φ = 110009432.

The previous prime is 220018837. The next prime is 220018921. The reversal of 220018868 is 868810022.

220018868 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., 219691684 + 327184 = 14822^2 + 572^2 .

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, 27502355 + ... + 27502362.

It is an arithmetic number, because the mean of its divisors is an integer number (64172171).

Almost surely, 2^220018868 is an apocalyptic number.

It is an amenable number.

220018868 is a deficient number, since it is larger than the sum of its proper divisors (165014158).

220018868 is a wasteful number, since it uses less digits than its factorization.

220018868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55004721 (or 55004719 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 220018868 is about 14833.0330007049. The cubic root of 220018868 is about 603.6983311478.

The spelling of 220018868 in words is "two hundred twenty million, eighteen thousand, eight hundred sixty-eight".