7438608109 has 2 divisors, whose sum is σ = 7438608110. Its totient is φ = 7438608108.

The previous prime is 7438608061. The next prime is 7438608127. The reversal of 7438608109 is 9018068347.

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., 7348775625 + 89832484 = 85725^2 + 9478^2 .

It is a cyclic number.

It is not a de Polignac number, because 7438608109 - 2¹⁵ = 7438575341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7438608169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3719304054 + 3719304055.

It is an arithmetic number, because the mean of its divisors is an integer number (3719304055).

Almost surely, 2^7438608109 is an apocalyptic number.

It is an amenable number.

7438608109 is a deficient number, since it is larger than the sum of its proper divisors (1).

7438608109 is an equidigital number, since it uses as much as digits as its factorization.

7438608109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 7438608109 is about 86247.3658090495. The cubic root of 7438608109 is about 1952.0782671695.

The spelling of 7438608109 in words is "seven billion, four hundred thirty-eight million, six hundred eight thousand, one hundred nine".