20010110189 has 2 divisors, whose sum is σ = 20010110190. Its totient is φ = 20010110188.

The previous prime is 20010110161. The next prime is 20010110191. The reversal of 20010110189 is 98101101002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19083212164 + 926898025 = 138142^2 + 30445^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010110189 - 2¹² = 20010106093 is a prime.

Together with 20010110191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010110689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005055094 + 10005055095.

It is an arithmetic number, because the mean of its divisors is an integer number (10005055095).

Almost surely, 2^20010110189 is an apocalyptic number.

It is an amenable number.

20010110189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010110189 is an equidigital number, since it uses as much as digits as its factorization.

20010110189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 20010110189 in words is "twenty billion, ten million, one hundred ten thousand, one hundred eighty-nine".