826189913 has 2 divisors, whose sum is σ = 826189914. Its totient is φ = 826189912.

The previous prime is 826189879. The next prime is 826189927. The reversal of 826189913 is 319981628.

826189913 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., 451690009 + 374499904 = 21253^2 + 19352^2 .

It is a cyclic number.

It is not a de Polignac number, because 826189913 - 2⁸ = 826189657 is a prime.

It is not a weakly prime, because it can be changed into another prime (826189933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413094956 + 413094957.

It is an arithmetic number, because the mean of its divisors is an integer number (413094957).

Almost surely, 2^826189913 is an apocalyptic number.

It is an amenable number.

826189913 is a deficient number, since it is larger than the sum of its proper divisors (1).

826189913 is an equidigital number, since it uses as much as digits as its factorization.

826189913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 47.

The square root of 826189913 is about 28743.5194957055. The cubic root of 826189913 is about 938.3394225819.

The spelling of 826189913 in words is "eight hundred twenty-six million, one hundred eighty-nine thousand, nine hundred thirteen".