829145081 has 2 divisors, whose sum is σ = 829145082. Its totient is φ = 829145080.

The previous prime is 829145069. The next prime is 829145111. The reversal of 829145081 is 180541928.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483780025 + 345365056 = 21995^2 + 18584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-829145081 is a prime.

It is a super-2 number, since 2×829145081² = 1374963130692993122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (829145011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414572540 + 414572541.

It is an arithmetic number, because the mean of its divisors is an integer number (414572541).

Almost surely, 2^829145081 is an apocalyptic number.

It is an amenable number.

829145081 is a deficient number, since it is larger than the sum of its proper divisors (1).

829145081 is an equidigital number, since it uses as much as digits as its factorization.

829145081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 829145081 is about 28794.8794232586. The cubic root of 829145081 is about 939.4568618013.

The spelling of 829145081 in words is "eight hundred twenty-nine million, one hundred forty-five thousand, eighty-one".