2130526861 has 2 divisors, whose sum is σ = 2130526862. Its totient is φ = 2130526860.

The previous prime is 2130526841. The next prime is 2130526877. The reversal of 2130526861 is 1686250312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1971892836 + 158634025 = 44406^2 + 12595^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130526861 - 2⁷ = 2130526733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130526831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065263430 + 1065263431.

It is an arithmetic number, because the mean of its divisors is an integer number (1065263431).

Almost surely, 2^2130526861 is an apocalyptic number.

It is an amenable number.

2130526861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130526861 is an equidigital number, since it uses as much as digits as its factorization.

2130526861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2130526861 is about 46157.6305826025. The cubic root of 2130526861 is about 1286.7544277421.

The spelling of 2130526861 in words is "two billion, one hundred thirty million, five hundred twenty-six thousand, eight hundred sixty-one".