219838147 has 2 divisors, whose sum is σ = 219838148. Its totient is φ = 219838146.

The previous prime is 219838133. The next prime is 219838207. The reversal of 219838147 is 741838912.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219838147 is a prime.

It is not a weakly prime, because it can be changed into another prime (219838547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109919073 + 109919074.

It is an arithmetic number, because the mean of its divisors is an integer number (109919074).

Almost surely, 2^219838147 is an apocalyptic number.

219838147 is a deficient number, since it is larger than the sum of its proper divisors (1).

219838147 is an equidigital number, since it uses as much as digits as its factorization.

219838147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 219838147 is about 14826.9399068048. The cubic root of 219838147 is about 603.5329955531.

The spelling of 219838147 in words is "two hundred nineteen million, eight hundred thirty-eight thousand, one hundred forty-seven".