20084161813 has 2 divisors, whose sum is σ = 20084161814. Its totient is φ = 20084161812.

The previous prime is 20084161789. The next prime is 20084161817. The reversal of 20084161813 is 31816148002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12961139409 + 7123022404 = 113847^2 + 84398^2 .

It is a cyclic number.

It is not a de Polignac number, because 20084161813 - 2⁵ = 20084161781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20084161817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10042080906 + 10042080907.

It is an arithmetic number, because the mean of its divisors is an integer number (10042080907).

Almost surely, 2^20084161813 is an apocalyptic number.

It is an amenable number.

20084161813 is a deficient number, since it is larger than the sum of its proper divisors (1).

20084161813 is an equidigital number, since it uses as much as digits as its factorization.

20084161813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 20084161813 in words is "twenty billion, eighty-four million, one hundred sixty-one thousand, eight hundred thirteen".