2765730281 has 2 divisors, whose sum is σ = 2765730282. Its totient is φ = 2765730280.

The previous prime is 2765730263. The next prime is 2765730293. The reversal of 2765730281 is 1820375672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1874110681 + 891619600 = 43291^2 + 29860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2765730281 - 2¹⁸ = 2765468137 is a prime.

It is a super-2 number, since 2×2765730281² = 15298527974480677922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2765730211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1382865140 + 1382865141.

It is an arithmetic number, because the mean of its divisors is an integer number (1382865141).

Almost surely, 2^2765730281 is an apocalyptic number.

It is an amenable number.

2765730281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2765730281 is an equidigital number, since it uses as much as digits as its factorization.

2765730281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 2765730281 is about 52590.2108856772. The cubic root of 2765730281 is about 1403.6859132493.

The spelling of 2765730281 in words is "two billion, seven hundred sixty-five million, seven hundred thirty thousand, two hundred eighty-one".