20092081 has 2 divisors, whose sum is σ = 20092082. Its totient is φ = 20092080.

The previous prime is 20092069. The next prime is 20092117. The reversal of 20092081 is 18029002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16941456 + 3150625 = 4116^2 + 1775^2 .

It is a cyclic number.

It is not a de Polignac number, because 20092081 - 2⁵ = 20092049 is a prime.

It is a super-3 number, since 3×20092081³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (20092001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10046040 + 10046041.

It is an arithmetic number, because the mean of its divisors is an integer number (10046041).

Almost surely, 2^20092081 is an apocalyptic number.

It is an amenable number.

20092081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20092081 is an equidigital number, since it uses as much as digits as its factorization.

20092081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 20092081 is about 4482.4191013336. The cubic root of 20092081 is about 271.8577011233.

The spelling of 20092081 in words is "twenty million, ninety-two thousand, eighty-one".