7329138281 has 2 divisors, whose sum is σ = 7329138282. Its totient is φ = 7329138280.

The previous prime is 7329138269. The next prime is 7329138283. The reversal of 7329138281 is 1828319237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6271848025 + 1057290256 = 79195^2 + 32516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7329138281 is a prime.

It is a super-2 number, since 2×7329138281² (a number of 21 digits) contains 22 as substring.

Together with 7329138283, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 5.

It is not a weakly prime, because it can be changed into another prime (7329138283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3664569140 + 3664569141.

It is an arithmetic number, because the mean of its divisors is an integer number (3664569141).

Almost surely, 2^7329138281 is an apocalyptic number.

It is an amenable number.

7329138281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7329138281 is an equidigital number, since it uses as much as digits as its factorization.

7329138281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 7329138281 is about 85610.3865252342. The cubic root of 7329138281 is about 1942.4550242874.

The spelling of 7329138281 in words is "seven billion, three hundred twenty-nine million, one hundred thirty-eight thousand, two hundred eighty-one".