2218835251 has 2 divisors, whose sum is σ = 2218835252. Its totient is φ = 2218835250.

The previous prime is 2218835249. The next prime is 2218835263. The reversal of 2218835251 is 1525388122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2218835251 - 2¹ = 2218835249 is a prime.

Together with 2218835249, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2218835251.

It is not a weakly prime, because it can be changed into another prime (2218835221) 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, 1109417625 + 1109417626.

It is an arithmetic number, because the mean of its divisors is an integer number (1109417626).

Almost surely, 2^2218835251 is an apocalyptic number.

2218835251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218835251 is an equidigital number, since it uses as much as digits as its factorization.

2218835251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 37.

The square root of 2218835251 is about 47104.5141255061. The cubic root of 2218835251 is about 1304.2925660795.

The spelling of 2218835251 in words is "two billion, two hundred eighteen million, eight hundred thirty-five thousand, two hundred fifty-one".