219531968 has 28 divisors (see below), whose sum is σ = 436135272. Its totient is φ = 109639680.

The previous prime is 219531967. The next prime is 219531973. The reversal of 219531968 is 869135912.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (219531967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81296 + ... + 83952.

Almost surely, 2^219531968 is an apocalyptic number.

It is an amenable number.

219531968 is a deficient number, since it is larger than the sum of its proper divisors (216603304).

219531968 is a wasteful number, since it uses less digits than its factorization.

219531968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960 (or 3950 counting only the distinct ones).

The product of its digits is 116640, while the sum is 44.

The square root of 219531968 is about 14816.6112184939. The cubic root of 219531968 is about 603.2526757114.

The spelling of 219531968 in words is "two hundred nineteen million, five hundred thirty-one thousand, nine hundred sixty-eight".