2218179361 has 2 divisors, whose sum is σ = 2218179362. Its totient is φ = 2218179360.

The previous prime is 2218179349. The next prime is 2218179389. The reversal of 2218179361 is 1639718122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1366706961 + 851472400 = 36969^2 + 29180^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218179361 - 2¹⁷ = 2218048289 is a prime.

It is not a weakly prime, because it can be changed into another prime (2218179331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109089680 + 1109089681.

It is an arithmetic number, because the mean of its divisors is an integer number (1109089681).

Almost surely, 2^2218179361 is an apocalyptic number.

It is an amenable number.

2218179361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218179361 is an equidigital number, since it uses as much as digits as its factorization.

2218179361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 2218179361 is about 47097.5515393316. The cubic root of 2218179361 is about 1304.1640366693.

The spelling of 2218179361 in words is "two billion, two hundred eighteen million, one hundred seventy-nine thousand, three hundred sixty-one".