7398642529 has 2 divisors, whose sum is σ = 7398642530. Its totient is φ = 7398642528.

The previous prime is 7398642523. The next prime is 7398642547. The reversal of 7398642529 is 9252468937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4692250000 + 2706392529 = 68500^2 + 52023^2 .

It is a cyclic number.

It is not a de Polignac number, because 7398642529 - 2³ = 7398642521 is a prime.

It is a super-2 number, since 2×7398642529² (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 7398642529.

It is not a weakly prime, because it can be changed into another prime (7398642521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3699321264 + 3699321265.

It is an arithmetic number, because the mean of its divisors is an integer number (3699321265).

Almost surely, 2^7398642529 is an apocalyptic number.

It is an amenable number.

7398642529 is a deficient number, since it is larger than the sum of its proper divisors (1).

7398642529 is an equidigital number, since it uses as much as digits as its factorization.

7398642529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 55.

The square root of 7398642529 is about 86015.3621686266. The cubic root of 7398642529 is about 1948.5759955577.

The spelling of 7398642529 in words is "seven billion, three hundred ninety-eight million, six hundred forty-two thousand, five hundred twenty-nine".