7290665749 has 2 divisors, whose sum is σ = 7290665750. Its totient is φ = 7290665748.

The previous prime is 7290665737. The next prime is 7290665819. The reversal of 7290665749 is 9475660927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6799156849 + 491508900 = 82457^2 + 22170^2 .

It is a cyclic number.

It is not a de Polignac number, because 7290665749 - 2⁵ = 7290665717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7290665749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7290665719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3645332874 + 3645332875.

It is an arithmetic number, because the mean of its divisors is an integer number (3645332875).

Almost surely, 2^7290665749 is an apocalyptic number.

It is an amenable number.

7290665749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7290665749 is an equidigital number, since it uses as much as digits as its factorization.

7290665749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The square root of 7290665749 is about 85385.3954081141. The cubic root of 7290665749 is about 1939.0502444476.

The spelling of 7290665749 in words is "seven billion, two hundred ninety million, six hundred sixty-five thousand, seven hundred forty-nine".