2532128861 has 2 divisors, whose sum is σ = 2532128862. Its totient is φ = 2532128860.

The previous prime is 2532128843. The next prime is 2532128897. The reversal of 2532128861 is 1688212352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1313700025 + 1218428836 = 36245^2 + 34906^2 .

It is a cyclic number.

It is not a de Polignac number, because 2532128861 - 2³⁰ = 1458387037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2532127861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1266064430 + 1266064431.

It is an arithmetic number, because the mean of its divisors is an integer number (1266064431).

Almost surely, 2^2532128861 is an apocalyptic number.

It is an amenable number.

2532128861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2532128861 is an equidigital number, since it uses as much as digits as its factorization.

2532128861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 38.

The square root of 2532128861 is about 50320.2629265786. The cubic root of 2532128861 is about 1362.9981544146.

The spelling of 2532128861 in words is "two billion, five hundred thirty-two million, one hundred twenty-eight thousand, eight hundred sixty-one".