2872745509 has 2 divisors, whose sum is σ = 2872745510. Its totient is φ = 2872745508.

The previous prime is 2872745437. The next prime is 2872745543. The reversal of 2872745509 is 9055472782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1457330625 + 1415414884 = 38175^2 + 37622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2872745509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2872745209) 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, 1436372754 + 1436372755.

It is an arithmetic number, because the mean of its divisors is an integer number (1436372755).

Almost surely, 2^2872745509 is an apocalyptic number.

It is an amenable number.

2872745509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2872745509 is an equidigital number, since it uses as much as digits as its factorization.

2872745509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The square root of 2872745509 is about 53597.9991137729. Note that the first 3 decimals coincide. The cubic root of 2872745509 is about 1421.5617131641.

The spelling of 2872745509 in words is "two billion, eight hundred seventy-two million, seven hundred forty-five thousand, five hundred nine".