20302111189 has 2 divisors, whose sum is σ = 20302111190. Its totient is φ = 20302111188.

The previous prime is 20302111183. The next prime is 20302111223. The reversal of 20302111189 is 98111120302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11714382289 + 8587728900 = 108233^2 + 92670^2 .

It is a cyclic number.

It is not a de Polignac number, because 20302111189 - 2⁹ = 20302110677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302111183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151055594 + 10151055595.

It is an arithmetic number, because the mean of its divisors is an integer number (10151055595).

Almost surely, 2^20302111189 is an apocalyptic number.

It is an amenable number.

20302111189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302111189 is an equidigital number, since it uses as much as digits as its factorization.

20302111189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 20302111189 in words is "twenty billion, three hundred two million, one hundred eleven thousand, one hundred eighty-nine".