1039802081 has 2 divisors, whose sum is σ = 1039802082. Its totient is φ = 1039802080.

The previous prime is 1039802063. The next prime is 1039802089. The reversal of 1039802081 is 1802089301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 988536481 + 51265600 = 31441^2 + 7160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1039802081 is a prime.

It is a super-2 number, since 2×1039802081² = 2162376735303861122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1039802089) 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, 519901040 + 519901041.

It is an arithmetic number, because the mean of its divisors is an integer number (519901041).

Almost surely, 2^1039802081 is an apocalyptic number.

It is an amenable number.

1039802081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039802081 is an equidigital number, since it uses as much as digits as its factorization.

1039802081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1039802081 is about 32245.9622433569. The cubic root of 1039802081 is about 1013.0951293914.

The spelling of 1039802081 in words is "one billion, thirty-nine million, eight hundred two thousand, eighty-one".