218948033 has 2 divisors, whose sum is σ = 218948034. Its totient is φ = 218948032.

The previous prime is 218948021. The next prime is 218948047. The reversal of 218948033 is 330849812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160073104 + 58874929 = 12652^2 + 7673^2 .

It is a cyclic number.

It is not a de Polignac number, because 218948033 - 2⁶ = 218947969 is a prime.

It is not a weakly prime, because it can be changed into another prime (218948333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109474016 + 109474017.

It is an arithmetic number, because the mean of its divisors is an integer number (109474017).

Almost surely, 2^218948033 is an apocalyptic number.

It is an amenable number.

218948033 is a deficient number, since it is larger than the sum of its proper divisors (1).

218948033 is an equidigital number, since it uses as much as digits as its factorization.

218948033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 218948033 is about 14796.8926805597. The cubic root of 218948033 is about 602.7173350902.

The spelling of 218948033 in words is "two hundred eighteen million, nine hundred forty-eight thousand, thirty-three".