2288918081 has 2 divisors, whose sum is σ = 2288918082. Its totient is φ = 2288918080.

The previous prime is 2288918017. The next prime is 2288918101. The reversal of 2288918081 is 1808198822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1198267456 + 1090650625 = 34616^2 + 33025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2288918081 - 2⁶ = 2288918017 is a prime.

It is a super-2 number, since 2×2288918081² = 10478291963057445122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2288918881) 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, 1144459040 + 1144459041.

It is an arithmetic number, because the mean of its divisors is an integer number (1144459041).

Almost surely, 2^2288918081 is an apocalyptic number.

It is an amenable number.

2288918081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2288918081 is an equidigital number, since it uses as much as digits as its factorization.

2288918081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 47.

The square root of 2288918081 is about 47842.6387336652. The cubic root of 2288918081 is about 1317.8826786070.

The spelling of 2288918081 in words is "two billion, two hundred eighty-eight million, nine hundred eighteen thousand, eighty-one".