189090006 has 32 divisors (see below), whose sum is σ = 442261248. Its totient is φ = 52768800.

The previous prime is 189089993. The next prime is 189090007. The reversal of 189090006 is 600090981.

189090006 = 6874² + 6875² + ... + 6877².

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189090007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50545 + ... + 54156.

It is an arithmetic number, because the mean of its divisors is an integer number (13820664).

Almost surely, 2^189090006 is an apocalyptic number.

189090006 is an abundant number, since it is smaller than the sum of its proper divisors (253171242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189090006 is a wasteful number, since it uses less digits than its factorization.

189090006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104756.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 189090006 is about 13751.0001818050. Note that the first 3 decimals coincide. The cubic root of 189090006 is about 573.9704384085.

The spelling of 189090006 in words is "one hundred eighty-nine million, ninety thousand, six".