218199341 has 2 divisors, whose sum is σ = 218199342. Its totient is φ = 218199340.

The previous prime is 218199307. The next prime is 218199347. The reversal of 218199341 is 143991812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218182441 + 16900 = 14771^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 218199341 - 2¹⁰ = 218198317 is a prime.

It is a super-2 number, since 2×218199341² = 95221904825668562, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 218199295 and 218199304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218199347) 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, 109099670 + 109099671.

It is an arithmetic number, because the mean of its divisors is an integer number (109099671).

Almost surely, 2^218199341 is an apocalyptic number.

It is an amenable number.

218199341 is a deficient number, since it is larger than the sum of its proper divisors (1).

218199341 is an equidigital number, since it uses as much as digits as its factorization.

218199341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The square root of 218199341 is about 14771.5720558104. The cubic root of 218199341 is about 602.0295539624.

The spelling of 218199341 in words is "two hundred eighteen million, one hundred ninety-nine thousand, three hundred forty-one".