218413043 has 2 divisors, whose sum is σ = 218413044. Its totient is φ = 218413042.

The previous prime is 218412989. The next prime is 218413049. The reversal of 218413043 is 340314812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 218413043 - 2⁶ = 218412979 is a prime.

It is not a weakly prime, because it can be changed into another prime (218413049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109206521 + 109206522.

It is an arithmetic number, because the mean of its divisors is an integer number (109206522).

Almost surely, 2^218413043 is an apocalyptic number.

218413043 is a deficient number, since it is larger than the sum of its proper divisors (1).

218413043 is an equidigital number, since it uses as much as digits as its factorization.

218413043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 218413043 is about 14778.8038419894. The cubic root of 218413043 is about 602.2260301768.

Adding to 218413043 its reverse (340314812), we get a palindrome (558727855).

The spelling of 218413043 in words is "two hundred eighteen million, four hundred thirteen thousand, forty-three".