20182909589 has 2 divisors, whose sum is σ = 20182909590. Its totient is φ = 20182909588.

The previous prime is 20182909559. The next prime is 20182909673. The reversal of 20182909589 is 98590928102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17472874225 + 2710035364 = 132185^2 + 52058^2 .

It is a cyclic number.

It is not a de Polignac number, because 20182909589 - 2¹² = 20182905493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20182909589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20182909559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10091454794 + 10091454795.

It is an arithmetic number, because the mean of its divisors is an integer number (10091454795).

Almost surely, 2^20182909589 is an apocalyptic number.

It is an amenable number.

20182909589 is a deficient number, since it is larger than the sum of its proper divisors (1).

20182909589 is an equidigital number, since it uses as much as digits as its factorization.

20182909589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 53.

The spelling of 20182909589 in words is "twenty billion, one hundred eighty-two million, nine hundred nine thousand, five hundred eighty-nine".