7838323081 has 2 divisors, whose sum is σ = 7838323082. Its totient is φ = 7838323080.

The previous prime is 7838323067. The next prime is 7838323121. The reversal of 7838323081 is 1803238387.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6846073081 + 992250000 = 82741^2 + 31500^2 .

It is a cyclic number.

It is not a de Polignac number, because 7838323081 - 2¹³ = 7838314889 is a prime.

It is a super-2 number, since 2×7838323081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7838320081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3919161540 + 3919161541.

It is an arithmetic number, because the mean of its divisors is an integer number (3919161541).

Almost surely, 2^7838323081 is an apocalyptic number.

It is an amenable number.

7838323081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7838323081 is an equidigital number, since it uses as much as digits as its factorization.

7838323081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 7838323081 is about 88534.3045434932. The cubic root of 7838323081 is about 1986.4351285491.

The spelling of 7838323081 in words is "seven billion, eight hundred thirty-eight million, three hundred twenty-three thousand, eighty-one".