219139168 has 12 divisors (see below), whose sum is σ = 431430300. Its totient is φ = 109569568.

The previous prime is 219139133. The next prime is 219139169. The reversal of 219139168 is 861931912.

It is a self number, because there is not a number n which added to its sum of digits gives 219139168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219139169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3424018 + ... + 3424081.

It is an arithmetic number, because the mean of its divisors is an integer number (35952525).

Almost surely, 2^219139168 is an apocalyptic number.

It is an amenable number.

219139168 is a deficient number, since it is larger than the sum of its proper divisors (212291132).

219139168 is an equidigital number, since it uses as much as digits as its factorization.

219139168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6848109 (or 6848101 counting only the distinct ones).

The product of its digits is 23328, while the sum is 40.

The square root of 219139168 is about 14803.3498911564. The cubic root of 219139168 is about 602.8926687381.

The spelling of 219139168 in words is "two hundred nineteen million, one hundred thirty-nine thousand, one hundred sixty-eight".