2290618081 has 2 divisors, whose sum is σ = 2290618082. Its totient is φ = 2290618080.

The previous prime is 2290618079. The next prime is 2290618123. The reversal of 2290618081 is 1808160922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2267664400 + 22953681 = 47620^2 + 4791^2 .

It is a cyclic number.

It is not a de Polignac number, because 2290618081 - 2¹ = 2290618079 is a prime.

It is a super-2 number, since 2×2290618081² = 10493862386008245122, which contains 22 as substring.

Together with 2290618079, 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 2290618081.

It is not a weakly prime, because it can be changed into another prime (2290618021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145309040 + 1145309041.

It is an arithmetic number, because the mean of its divisors is an integer number (1145309041).

Almost surely, 2^2290618081 is an apocalyptic number.

It is an amenable number.

2290618081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2290618081 is an equidigital number, since it uses as much as digits as its factorization.

2290618081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 2290618081 is about 47860.4020146091. The cubic root of 2290618081 is about 1318.2088656304.

The spelling of 2290618081 in words is "two billion, two hundred ninety million, six hundred eighteen thousand, eighty-one".