2942778995209 has 81 divisors (see below), whose sum is σ = 3401041388277. Its totient is φ = 2545347990528.

The previous prime is 2942778995137. The next prime is 2942778995227. The reversal of 2942778995209 is 9025998772492.

The square root of 2942778995209 is 1715453.

It is a perfect power (a square), and thus also a powerful number.

2942778995209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 359044235209 + 2583734760000 = 599203^2 + 1607400^2 .

It is not a de Polignac number, because 2942778995209 - 2¹⁵ = 2942778962441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2942778995249) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 26042291937 + ... + 26042292049.

Almost surely, 2^{2942778995209} is an apocalyptic number.

2942778995209 is the 1715453-rd square number.

2942778995209 is the 857727-th centered octagonal number.

It is an amenable number.

2942778995209 is a deficient number, since it is larger than the sum of its proper divisors (458262393068).

2942778995209 is an equidigital number, since it uses as much as digits as its factorization.

2942778995209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 411505920, while the sum is 73.

The spelling of 2942778995209 in words is "two trillion, nine hundred forty-two billion, seven hundred seventy-eight million, nine hundred ninety-five thousand, two hundred nine".