2218519801 has 2 divisors, whose sum is σ = 2218519802. Its totient is φ = 2218519800.

The previous prime is 2218519789. The next prime is 2218519841. The reversal of 2218519801 is 1089158122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2187994176 + 30525625 = 46776^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218519801 - 2¹¹ = 2218517753 is a prime.

It is not a weakly prime, because it can be changed into another prime (2218519841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109259900 + 1109259901.

It is an arithmetic number, because the mean of its divisors is an integer number (1109259901).

Almost surely, 2^2218519801 is an apocalyptic number.

It is an amenable number.

2218519801 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218519801 is an equidigital number, since it uses as much as digits as its factorization.

2218519801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 2218519801 is about 47101.1656012885. The cubic root of 2218519801 is about 1304.2307530795.

The spelling of 2218519801 in words is "two billion, two hundred eighteen million, five hundred nineteen thousand, eight hundred one".