2782042217 has 2 divisors, whose sum is σ = 2782042218. Its totient is φ = 2782042216.

The previous prime is 2782042213. The next prime is 2782042279. The reversal of 2782042217 is 7122402872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2777184601 + 4857616 = 52699^2 + 2204^2 .

It is a cyclic number.

It is not a de Polignac number, because 2782042217 - 2² = 2782042213 is a prime.

It is not a weakly prime, because it can be changed into another prime (2782042213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391021108 + 1391021109.

It is an arithmetic number, because the mean of its divisors is an integer number (1391021109).

Almost surely, 2^2782042217 is an apocalyptic number.

It is an amenable number.

2782042217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2782042217 is an equidigital number, since it uses as much as digits as its factorization.

2782042217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 2782042217 is about 52745.0681770343. The cubic root of 2782042217 is about 1406.4400945010.

The spelling of 2782042217 in words is "two billion, seven hundred eighty-two million, forty-two thousand, two hundred seventeen".