189243667 has 16 divisors (see below), whose sum is σ = 206300160. Its totient is φ = 173005632.

The previous prime is 189243617. The next prime is 189243671. The reversal of 189243667 is 766342981.

It is a cyclic number.

It is not a de Polignac number, because 189243667 - 2¹⁵ = 189210899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189243617) 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, 63738 + ... + 66640.

It is an arithmetic number, because the mean of its divisors is an integer number (12893760).

Almost surely, 2^189243667 is an apocalyptic number.

189243667 is a deficient number, since it is larger than the sum of its proper divisors (17056493).

189243667 is a wasteful number, since it uses less digits than its factorization.

189243667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042.

The product of its digits is 435456, while the sum is 46.

The square root of 189243667 is about 13756.5863134718. The cubic root of 189243667 is about 574.1258723093.

The spelling of 189243667 in words is "one hundred eighty-nine million, two hundred forty-three thousand, six hundred sixty-seven".