7654644509 has 2 divisors, whose sum is σ = 7654644510. Its totient is φ = 7654644508.

The previous prime is 7654644479. The next prime is 7654644523. The reversal of 7654644509 is 9054464567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7288036900 + 366607609 = 85370^2 + 19147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7654644509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7654644709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3827322254 + 3827322255.

It is an arithmetic number, because the mean of its divisors is an integer number (3827322255).

Almost surely, 2^7654644509 is an apocalyptic number.

It is an amenable number.

7654644509 is a deficient number, since it is larger than the sum of its proper divisors (1).

7654644509 is an equidigital number, since it uses as much as digits as its factorization.

7654644509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The square root of 7654644509 is about 87490.8252847120. The cubic root of 7654644509 is about 1970.7960149866.

The spelling of 7654644509 in words is "seven billion, six hundred fifty-four million, six hundred forty-four thousand, five hundred nine".