2971997009 has 2 divisors, whose sum is σ = 2971997010. Its totient is φ = 2971997008.

The previous prime is 2971996913. The next prime is 2971997027. The reversal of 2971997009 is 9007991792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2743140625 + 228856384 = 52375^2 + 15128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2971997009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2971997059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1485998504 + 1485998505.

It is an arithmetic number, because the mean of its divisors is an integer number (1485998505).

Almost surely, 2^2971997009 is an apocalyptic number.

It is an amenable number.

2971997009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2971997009 is an equidigital number, since it uses as much as digits as its factorization.

2971997009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 642978, while the sum is 53.

The square root of 2971997009 is about 54516.0252494622. The cubic root of 2971997009 is about 1437.7480569430.

The spelling of 2971997009 in words is "two billion, nine hundred seventy-one million, nine hundred ninety-seven thousand, nine".