2144335657 has 2 divisors, whose sum is σ = 2144335658. Its totient is φ = 2144335656.

The previous prime is 2144335637. The next prime is 2144335663. The reversal of 2144335657 is 7565334412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1098524736 + 1045810921 = 33144^2 + 32339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2144335657 is a prime.

It is not a weakly prime, because it can be changed into another prime (2144335607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072167828 + 1072167829.

It is an arithmetic number, because the mean of its divisors is an integer number (1072167829).

Almost surely, 2^2144335657 is an apocalyptic number.

It is an amenable number.

2144335657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144335657 is an equidigital number, since it uses as much as digits as its factorization.

2144335657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 40.

The square root of 2144335657 is about 46306.9720128622. The cubic root of 2144335657 is about 1289.5284330894.

The spelling of 2144335657 in words is "two billion, one hundred forty-four million, three hundred thirty-five thousand, six hundred fifty-seven".