2528378459 has 2 divisors, whose sum is σ = 2528378460. Its totient is φ = 2528378458.

The previous prime is 2528378449. The next prime is 2528378473. The reversal of 2528378459 is 9548738252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2528378459 - 2⁴ = 2528378443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2528378459.

It is not a weakly prime, because it can be changed into another prime (2528378449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264189229 + 1264189230.

It is an arithmetic number, because the mean of its divisors is an integer number (1264189230).

Almost surely, 2^2528378459 is an apocalyptic number.

2528378459 is a deficient number, since it is larger than the sum of its proper divisors (1).

2528378459 is an equidigital number, since it uses as much as digits as its factorization.

2528378459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 53.

The square root of 2528378459 is about 50282.9837917361. The cubic root of 2528378459 is about 1362.3248978916.

The spelling of 2528378459 in words is "two billion, five hundred twenty-eight million, three hundred seventy-eight thousand, four hundred fifty-nine".