2872661749 has 2 divisors, whose sum is σ = 2872661750. Its totient is φ = 2872661748.

The previous prime is 2872661731. The next prime is 2872661773. The reversal of 2872661749 is 9471662782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1795640625 + 1077021124 = 42375^2 + 32818^2 .

It is a cyclic number.

It is not a de Polignac number, because 2872661749 - 2¹⁹ = 2872137461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2872661696 and 2872661705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2872661719) 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, 1436330874 + 1436330875.

It is an arithmetic number, because the mean of its divisors is an integer number (1436330875).

Almost surely, 2^2872661749 is an apocalyptic number.

It is an amenable number.

2872661749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2872661749 is an equidigital number, since it uses as much as digits as its factorization.

2872661749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The square root of 2872661749 is about 53597.2177356250. The cubic root of 2872661749 is about 1421.5478969773.

The spelling of 2872661749 in words is "two billion, eight hundred seventy-two million, six hundred sixty-one thousand, seven hundred forty-nine".