7287551749 has 2 divisors, whose sum is σ = 7287551750. Its totient is φ = 7287551748.

The previous prime is 7287551741. The next prime is 7287551773. The reversal of 7287551749 is 9471557827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4643741025 + 2643810724 = 68145^2 + 51418^2 .

It is a cyclic number.

It is not a de Polignac number, because 7287551749 - 2³ = 7287551741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7287551749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7287551741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3643775874 + 3643775875.

It is an arithmetic number, because the mean of its divisors is an integer number (3643775875).

Almost surely, 2^7287551749 is an apocalyptic number.

It is an amenable number.

7287551749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7287551749 is an equidigital number, since it uses as much as digits as its factorization.

7287551749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4939200, while the sum is 55.

The square root of 7287551749 is about 85367.1584920103. The cubic root of 7287551749 is about 1938.7741351249.

The spelling of 7287551749 in words is "seven billion, two hundred eighty-seven million, five hundred fifty-one thousand, seven hundred forty-nine".