2235257861 has 2 divisors, whose sum is σ = 2235257862. Its totient is φ = 2235257860.

The previous prime is 2235257839. The next prime is 2235257867. The reversal of 2235257861 is 1687525322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1692088225 + 543169636 = 41135^2 + 23306^2 .

It is a cyclic number.

It is not a de Polignac number, because 2235257861 - 2⁶ = 2235257797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2235257867) 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, 1117628930 + 1117628931.

It is an arithmetic number, because the mean of its divisors is an integer number (1117628931).

Almost surely, 2^2235257861 is an apocalyptic number.

It is an amenable number.

2235257861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2235257861 is an equidigital number, since it uses as much as digits as its factorization.

2235257861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 41.

The square root of 2235257861 is about 47278.5137350996. The cubic root of 2235257861 is about 1307.5025472691.

The spelling of 2235257861 in words is "two billion, two hundred thirty-five million, two hundred fifty-seven thousand, eight hundred sixty-one".