788641081 has 2 divisors, whose sum is σ = 788641082. Its totient is φ = 788641080.

The previous prime is 788641069. The next prime is 788641093. The reversal of 788641081 is 180146887.

788641081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (788641069) and next prime (788641093).

It can be written as a sum of positive squares in only one way, i.e., 408040000 + 380601081 = 20200^2 + 19509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-788641081 is a prime.

It is a super-2 number, since 2×788641081² = 1243909509281697122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (788641031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394320540 + 394320541.

It is an arithmetic number, because the mean of its divisors is an integer number (394320541).

Almost surely, 2^788641081 is an apocalyptic number.

It is an amenable number.

788641081 is a deficient number, since it is larger than the sum of its proper divisors (1).

788641081 is an equidigital number, since it uses as much as digits as its factorization.

788641081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 43.

The square root of 788641081 is about 28082.7541562433. The cubic root of 788641081 is about 923.9031873387.

The spelling of 788641081 in words is "seven hundred eighty-eight million, six hundred forty-one thousand, eighty-one".