2122945457 has 2 divisors, whose sum is σ = 2122945458. Its totient is φ = 2122945456.

The previous prime is 2122945427. The next prime is 2122945469. The reversal of 2122945457 is 7545492212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2090409841 + 32535616 = 45721^2 + 5704^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122945457 - 2⁶ = 2122945393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2122945417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061472728 + 1061472729.

It is an arithmetic number, because the mean of its divisors is an integer number (1061472729).

Almost surely, 2^2122945457 is an apocalyptic number.

It is an amenable number.

2122945457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122945457 is an equidigital number, since it uses as much as digits as its factorization.

2122945457 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 2122945457 is about 46075.4322497359. The cubic root of 2122945457 is about 1285.2263237951.

The spelling of 2122945457 in words is "two billion, one hundred twenty-two million, nine hundred forty-five thousand, four hundred fifty-seven".