2738393509 has 2 divisors, whose sum is σ = 2738393510. Its totient is φ = 2738393508.

The previous prime is 2738393503. The next prime is 2738393513. The reversal of 2738393509 is 9053938372.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1691676900 + 1046716609 = 41130^2 + 32353^2 .

It is a cyclic number.

It is not a de Polignac number, because 2738393509 - 2¹⁵ = 2738360741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2738393503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1369196754 + 1369196755.

It is an arithmetic number, because the mean of its divisors is an integer number (1369196755).

Almost surely, 2^2738393509 is an apocalyptic number.

It is an amenable number.

2738393509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2738393509 is an equidigital number, since it uses as much as digits as its factorization.

2738393509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The square root of 2738393509 is about 52329.6618467958. The cubic root of 2738393509 is about 1399.0458650169.

The spelling of 2738393509 in words is "two billion, seven hundred thirty-eight million, three hundred ninety-three thousand, five hundred nine".