7438061513 has 2 divisors, whose sum is σ = 7438061514. Its totient is φ = 7438061512.

The previous prime is 7438061507. The next prime is 7438061531. The reversal of 7438061513 is 3151608347.

Together with next prime (7438061531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4205911609 + 3232149904 = 64853^2 + 56852^2 .

It is a cyclic number.

It is not a de Polignac number, because 7438061513 - 2⁴ = 7438061497 is a prime.

It is not a weakly prime, because it can be changed into another prime (7438001513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3719030756 + 3719030757.

It is an arithmetic number, because the mean of its divisors is an integer number (3719030757).

Almost surely, 2^7438061513 is an apocalyptic number.

It is an amenable number.

7438061513 is a deficient number, since it is larger than the sum of its proper divisors (1).

7438061513 is an equidigital number, since it uses as much as digits as its factorization.

7438061513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 7438061513 is about 86244.1969815941. The cubic root of 7438061513 is about 1952.0304524757.

The spelling of 7438061513 in words is "seven billion, four hundred thirty-eight million, sixty-one thousand, five hundred thirteen".