1234000189 has 2 divisors, whose sum is σ = 1234000190. Its totient is φ = 1234000188.

The previous prime is 1234000169. The next prime is 1234000213. The reversal of 1234000189 is 9810004321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 916091289 + 317908900 = 30267^2 + 17830^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234000189 - 2¹¹ = 1233998141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234000169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617000094 + 617000095.

It is an arithmetic number, because the mean of its divisors is an integer number (617000095).

Almost surely, 2^1234000189 is an apocalyptic number.

It is an amenable number.

1234000189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234000189 is an equidigital number, since it uses as much as digits as its factorization.

1234000189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1234000189 is about 35128.3388306364. The cubic root of 1234000189 is about 1072.6015216428.

The spelling of 1234000189 in words is "one billion, two hundred thirty-four million, one hundred eighty-nine", and thus it is an aban number.