189642006 has 32 divisors (see below), whose sum is σ = 423014400. Its totient is φ = 62975880.

The previous prime is 189641951. The next prime is 189642007. The reversal of 189642006 is 600246981.

189642006 is a `hidden beast` number, since 1 + 8 + 9 + 642 + 0 + 0 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189642007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8155 + ... + 21113.

It is an arithmetic number, because the mean of its divisors is an integer number (13219200).

Almost surely, 2^189642006 is an apocalyptic number.

189642006 is an abundant number, since it is smaller than the sum of its proper divisors (233372394).

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

189642006 is a wasteful number, since it uses less digits than its factorization.

189642006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13241 (or 13235 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 189642006 is about 13771.0568221905. The cubic root of 189642006 is about 574.5284158582.

Adding to 189642006 its reverse (600246981), we get a palindrome (789888987).

The spelling of 189642006 in words is "one hundred eighty-nine million, six hundred forty-two thousand, six".