7638745519 has 2 divisors, whose sum is σ = 7638745520. Its totient is φ = 7638745518.

The previous prime is 7638745451. The next prime is 7638745523. The reversal of 7638745519 is 9155478367.

7638745519 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7638745519 - 2⁹ = 7638745007 is a prime.

It is a super-2 number, since 2×7638745519² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7638745519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7638745529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3819372759 + 3819372760.

It is an arithmetic number, because the mean of its divisors is an integer number (3819372760).

Almost surely, 2^7638745519 is an apocalyptic number.

7638745519 is a deficient number, since it is larger than the sum of its proper divisors (1).

7638745519 is an equidigital number, since it uses as much as digits as its factorization.

7638745519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 55.

The square root of 7638745519 is about 87399.9171567113. The cubic root of 7638745519 is about 1969.4305962569.

The spelling of 7638745519 in words is "seven billion, six hundred thirty-eight million, seven hundred forty-five thousand, five hundred nineteen".