2122945469 has 2 divisors, whose sum is σ = 2122945470. Its totient is φ = 2122945468.

The previous prime is 2122945457. The next prime is 2122945477. The reversal of 2122945469 is 9645492212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1347991225 + 774954244 = 36715^2 + 27838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122945469 is a prime.

It is a super-2 number, since 2×2122945469² = 9013794928695259922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122942469) 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, 1061472734 + 1061472735.

It is an arithmetic number, because the mean of its divisors is an integer number (1061472735).

Almost surely, 2^2122945469 is an apocalyptic number.

It is an amenable number.

2122945469 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122945469 is an equidigital number, since it uses as much as digits as its factorization.

2122945469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The square root of 2122945469 is about 46075.4323799571. The cubic root of 2122945469 is about 1285.2263262167.

The spelling of 2122945469 in words is "two billion, one hundred twenty-two million, nine hundred forty-five thousand, four hundred sixty-nine".