2251018529 has 2 divisors, whose sum is σ = 2251018530. Its totient is φ = 2251018528.

The previous prime is 2251018513. The next prime is 2251018589. The reversal of 2251018529 is 9258101522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2216526400 + 34492129 = 47080^2 + 5873^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251018529 - 2⁴ = 2251018513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2251018589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125509264 + 1125509265.

It is an arithmetic number, because the mean of its divisors is an integer number (1125509265).

Almost surely, 2^2251018529 is an apocalyptic number.

It is an amenable number.

2251018529 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251018529 is an equidigital number, since it uses as much as digits as its factorization.

2251018529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 2251018529 is about 47444.8999261248. The cubic root of 2251018529 is about 1310.5683932847.

The spelling of 2251018529 in words is "two billion, two hundred fifty-one million, eighteen thousand, five hundred twenty-nine".