2782357489 has 2 divisors, whose sum is σ = 2782357490. Its totient is φ = 2782357488.

The previous prime is 2782357481. The next prime is 2782357499. The reversal of 2782357489 is 9847532872.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2212103089 + 570254400 = 47033^2 + 23880^2 .

It is a cyclic number.

It is not a de Polignac number, because 2782357489 - 2³ = 2782357481 is a prime.

It is not a weakly prime, because it can be changed into another prime (2782357481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391178744 + 1391178745.

It is an arithmetic number, because the mean of its divisors is an integer number (1391178745).

Almost surely, 2^2782357489 is an apocalyptic number.

It is an amenable number.

2782357489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2782357489 is an equidigital number, since it uses as much as digits as its factorization.

2782357489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 55.

The square root of 2782357489 is about 52748.0567319783. The cubic root of 2782357489 is about 1406.4932202744.

The spelling of 2782357489 in words is "two billion, seven hundred eighty-two million, three hundred fifty-seven thousand, four hundred eighty-nine".