2265836681 has 2 divisors, whose sum is σ = 2265836682. Its totient is φ = 2265836680.

The previous prime is 2265836641. The next prime is 2265836759. The reversal of 2265836681 is 1866385622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1754353225 + 511483456 = 41885^2 + 22616^2 .

It is a cyclic number.

It is not a de Polignac number, because 2265836681 - 2¹⁰ = 2265835657 is a prime.

It is a super-2 number, since 2×2265836681² = 10268031729930191522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2265836641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1132918340 + 1132918341.

It is an arithmetic number, because the mean of its divisors is an integer number (1132918341).

Almost surely, 2^2265836681 is an apocalyptic number.

It is an amenable number.

2265836681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2265836681 is an equidigital number, since it uses as much as digits as its factorization.

2265836681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 47.

The square root of 2265836681 is about 47600.8054658742. The cubic root of 2265836681 is about 1313.4378711155.

The spelling of 2265836681 in words is "two billion, two hundred sixty-five million, eight hundred thirty-six thousand, six hundred eighty-one".