2280693781 has 2 divisors, whose sum is σ = 2280693782. Its totient is φ = 2280693780.

The previous prime is 2280693749. The next prime is 2280693809. The reversal of 2280693781 is 1873960822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404000900 + 876692881 = 37470^2 + 29609^2 .

It is a cyclic number.

It is not a de Polignac number, because 2280693781 - 2⁵ = 2280693749 is a prime.

It is a super-2 number, since 2×2280693781² = 10403128245384151922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2280690781) 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, 1140346890 + 1140346891.

It is an arithmetic number, because the mean of its divisors is an integer number (1140346891).

Almost surely, 2^2280693781 is an apocalyptic number.

It is an amenable number.

2280693781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2280693781 is an equidigital number, since it uses as much as digits as its factorization.

2280693781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 2280693781 is about 47756.6098147680. The cubic root of 2280693781 is about 1316.3023584801.

The spelling of 2280693781 in words is "two billion, two hundred eighty million, six hundred ninety-three thousand, seven hundred eighty-one".