218463968 has 36 divisors (see below), whose sum is σ = 435784608. Its totient is φ = 107807040.

The previous prime is 218463953. The next prime is 218463983. The reversal of 218463968 is 869364812.

218463968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (218463953) and next prime (218463983).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219953 + ... + 220943.

It is an arithmetic number, because the mean of its divisors is an integer number (12105128).

Almost surely, 2^218463968 is an apocalyptic number.

It is an amenable number.

218463968 is a deficient number, since it is larger than the sum of its proper divisors (217320640).

218463968 is an frugal number, since it uses more digits than its factorization.

218463968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1076 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 218463968 is about 14780.5266482626. The cubic root of 218463968 is about 602.2728313765.

The spelling of 218463968 in words is "two hundred eighteen million, four hundred sixty-three thousand, nine hundred sixty-eight".