164798813 has 2 divisors, whose sum is σ = 164798814. Its totient is φ = 164798812.

The previous prime is 164798801. The next prime is 164798827. The reversal of 164798813 is 318897461.

164798813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144889369 + 19909444 = 12037^2 + 4462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164798813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164798863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82399406 + 82399407.

It is an arithmetic number, because the mean of its divisors is an integer number (82399407).

Almost surely, 2^164798813 is an apocalyptic number.

It is an amenable number.

164798813 is a deficient number, since it is larger than the sum of its proper divisors (1).

164798813 is an equidigital number, since it uses as much as digits as its factorization.

164798813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 164798813 is about 12837.3989966815. The cubic root of 164798813 is about 548.2576409860.

The spelling of 164798813 in words is "one hundred sixty-four million, seven hundred ninety-eight thousand, eight hundred thirteen".