2942721569 has 2 divisors, whose sum is σ = 2942721570. Its totient is φ = 2942721568.

The previous prime is 2942721563. The next prime is 2942721619. The reversal of 2942721569 is 9651272492.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2887665169 + 55056400 = 53737^2 + 7420^2 .

It is a cyclic number.

It is not a de Polignac number, because 2942721569 - 2²⁴ = 2925944353 is a prime.

It is a super-2 number, since 2×2942721569² = 17319220465315643522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2942721563) 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, 1471360784 + 1471360785.

It is an arithmetic number, because the mean of its divisors is an integer number (1471360785).

Almost surely, 2^2942721569 is an apocalyptic number.

It is an amenable number.

2942721569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2942721569 is an equidigital number, since it uses as much as digits as its factorization.

2942721569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 2942721569 is about 54246.8576877961. The cubic root of 2942721569 is about 1433.0116600601.

The spelling of 2942721569 in words is "two billion, nine hundred forty-two million, seven hundred twenty-one thousand, five hundred sixty-nine".