189042666 has 32 divisors (see below), whose sum is σ = 399082560. Its totient is φ = 59533056.

The previous prime is 189042631. The next prime is 189042671. The reversal of 189042666 is 666240981.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43170 + ... + 47346.

It is an arithmetic number, because the mean of its divisors is an integer number (12471330).

Almost surely, 2^189042666 is an apocalyptic number.

189042666 is an abundant number, since it is smaller than the sum of its proper divisors (210039894).

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

189042666 is a wasteful number, since it uses less digits than its factorization.

189042666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4598.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 189042666 is about 13749.2787447197. The cubic root of 189042666 is about 573.9225352450.

The spelling of 189042666 in words is "one hundred eighty-nine million, forty-two thousand, six hundred sixty-six".