1012000189 has 2 divisors, whose sum is σ = 1012000190. Its totient is φ = 1012000188.

The previous prime is 1012000183. The next prime is 1012000201. The reversal of 1012000189 is 9810002101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 983324164 + 28676025 = 31358^2 + 5355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012000189 - 2³ = 1012000181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012000181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506000094 + 506000095.

It is an arithmetic number, because the mean of its divisors is an integer number (506000095).

Almost surely, 2^1012000189 is an apocalyptic number.

It is an amenable number.

1012000189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012000189 is an equidigital number, since it uses as much as digits as its factorization.

1012000189 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 22.

The square root of 1012000189 is about 31811.9504117556. The cubic root of 1012000189 is about 1003.9841683218.

The spelling of 1012000189 in words is "one billion, twelve million, one hundred eighty-nine", and thus it is an aban number.