2218808797 has 2 divisors, whose sum is σ = 2218808798. Its totient is φ = 2218808796.

The previous prime is 2218808791. The next prime is 2218808803. The reversal of 2218808797 is 7978088122.

It is a balanced prime because it is at equal distance from previous prime (2218808791) and next prime (2218808803).

It can be written as a sum of positive squares in only one way, i.e., 1886512356 + 332296441 = 43434^2 + 18229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2218808797 is a prime.

It is a super-2 number, since 2×2218808797² = 9846224955289174418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2218808791) 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, 1109404398 + 1109404399.

It is an arithmetic number, because the mean of its divisors is an integer number (1109404399).

Almost surely, 2^2218808797 is an apocalyptic number.

It is an amenable number.

2218808797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218808797 is an equidigital number, since it uses as much as digits as its factorization.

2218808797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 2218808797 is about 47104.2333235560. The cubic root of 2218808797 is about 1304.2873825952.

The spelling of 2218808797 in words is "two billion, two hundred eighteen million, eight hundred eight thousand, seven hundred ninety-seven".