2782627261 has 2 divisors, whose sum is σ = 2782627262. Its totient is φ = 2782627260.

The previous prime is 2782627241. The next prime is 2782627271. The reversal of 2782627261 is 1627262872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1852011225 + 930616036 = 43035^2 + 30506^2 .

It is a cyclic number.

It is not a de Polignac number, because 2782627261 - 2⁵ = 2782627229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2782627241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391313630 + 1391313631.

It is an arithmetic number, because the mean of its divisors is an integer number (1391313631).

Almost surely, 2^2782627261 is an apocalyptic number.

It is an amenable number.

2782627261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2782627261 is an equidigital number, since it uses as much as digits as its factorization.

2782627261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 2782627261 is about 52750.6138447696. The cubic root of 2782627261 is about 1406.5386757593.

The spelling of 2782627261 in words is "two billion, seven hundred eighty-two million, six hundred twenty-seven thousand, two hundred sixty-one".