218024047 has 2 divisors, whose sum is σ = 218024048. Its totient is φ = 218024046.

The previous prime is 218024021. The next prime is 218024077. The reversal of 218024047 is 740420812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218024047 - 2¹⁹ = 217499759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218024077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109012023 + 109012024.

It is an arithmetic number, because the mean of its divisors is an integer number (109012024).

Almost surely, 2^218024047 is an apocalyptic number.

218024047 is a deficient number, since it is larger than the sum of its proper divisors (1).

218024047 is an equidigital number, since it uses as much as digits as its factorization.

218024047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 218024047 is about 14765.6373719525. The cubic root of 218024047 is about 601.8682940168.

Adding to 218024047 its reverse (740420812), we get a palindrome (958444859).

The spelling of 218024047 in words is "two hundred eighteen million, twenty-four thousand, forty-seven".