20074189 has 2 divisors, whose sum is σ = 20074190. Its totient is φ = 20074188.

The previous prime is 20074183. The next prime is 20074207. The reversal of 20074189 is 98147002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17724100 + 2350089 = 4210^2 + 1533^2 .

It is a cyclic number.

It is not a de Polignac number, because 20074189 - 2³ = 20074181 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20074189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20074181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10037094 + 10037095.

It is an arithmetic number, because the mean of its divisors is an integer number (10037095).

Almost surely, 2^20074189 is an apocalyptic number.

It is an amenable number.

20074189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20074189 is an equidigital number, since it uses as much as digits as its factorization.

20074189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 20074189 is about 4480.4228595078. The cubic root of 20074189 is about 271.7769807220.

The spelling of 20074189 in words is "twenty million, seventy-four thousand, one hundred eighty-nine".