2015042189 has 2 divisors, whose sum is σ = 2015042190. Its totient is φ = 2015042188.

The previous prime is 2015042171. The next prime is 2015042257. The reversal of 2015042189 is 9812405102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1896602500 + 118439689 = 43550^2 + 10883^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015042189 - 2²⁸ = 1746606733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2015044189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007521094 + 1007521095.

It is an arithmetic number, because the mean of its divisors is an integer number (1007521095).

Almost surely, 2^2015042189 is an apocalyptic number.

It is an amenable number.

2015042189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015042189 is an equidigital number, since it uses as much as digits as its factorization.

2015042189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2015042189 is about 44889.2213008869. The cubic root of 2015042189 is about 1263.0718257130.

The spelling of 2015042189 in words is "two billion, fifteen million, forty-two thousand, one hundred eighty-nine".