1039319681 has 2 divisors, whose sum is σ = 1039319682. Its totient is φ = 1039319680.

The previous prime is 1039319669. The next prime is 1039319683. The reversal of 1039319681 is 1869139301.

1039319681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 671639056 + 367680625 = 25916^2 + 19175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1039319681 - 2²⁶ = 972210817 is a prime.

It is a super-2 number, since 2×1039319681² = 2160370798627883522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1039319683, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1039319683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519659840 + 519659841.

It is an arithmetic number, because the mean of its divisors is an integer number (519659841).

Almost surely, 2^1039319681 is an apocalyptic number.

It is an amenable number.

1039319681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039319681 is an equidigital number, since it uses as much as digits as its factorization.

1039319681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 1039319681 is about 32238.4813693201. The cubic root of 1039319681 is about 1012.9384352486.

The spelling of 1039319681 in words is "one billion, thirty-nine million, three hundred nineteen thousand, six hundred eighty-one".