2528823989 has 2 divisors, whose sum is σ = 2528823990. Its totient is φ = 2528823988.

The previous prime is 2528823931. The next prime is 2528824007. The reversal of 2528823989 is 9893288252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2415231025 + 113592964 = 49145^2 + 10658^2 .

It is a cyclic number.

It is not a de Polignac number, because 2528823989 - 2²⁴ = 2512046773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2528823929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264411994 + 1264411995.

It is an arithmetic number, because the mean of its divisors is an integer number (1264411995).

Almost surely, 2^2528823989 is an apocalyptic number.

It is an amenable number.

2528823989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2528823989 is an equidigital number, since it uses as much as digits as its factorization.

2528823989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 56.

The square root of 2528823989 is about 50287.4138229438. The cubic root of 2528823989 is about 1362.4049124113.

The spelling of 2528823989 in words is "two billion, five hundred twenty-eight million, eight hundred twenty-three thousand, nine hundred eighty-nine".