2012189090 has 8 divisors (see below), whose sum is σ = 3621940380. Its totient is φ = 804875632.

The previous prime is 2012189089. The next prime is 2012189107. The reversal of 2012189090 is 909812102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1925717689 + 86471401 = 43883^2 + 9299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100609445 + ... + 100609464.

Almost surely, 2^2012189090 is an apocalyptic number.

2012189090 is a deficient number, since it is larger than the sum of its proper divisors (1609751290).

2012189090 is a wasteful number, since it uses less digits than its factorization.

2012189090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201218916.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 2012189090 is about 44857.4307110873. The cubic root of 2012189090 is about 1262.4754161798.

The spelling of 2012189090 in words is "two billion, twelve million, one hundred eighty-nine thousand, ninety".