189369994 has 32 divisors (see below), whose sum is σ = 324808704. Its totient is φ = 81964080.

The previous prime is 189369949. The next prime is 189369997. The reversal of 189369994 is 499963981.

It is not an unprimeable number, because it can be changed into a prime (189369997) 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, 132367 + ... + 133789.

It is an arithmetic number, because the mean of its divisors is an integer number (10150272).

Almost surely, 2^189369994 is an apocalyptic number.

189369994 is a deficient number, since it is larger than the sum of its proper divisors (135438710).

189369994 is a wasteful number, since it uses less digits than its factorization.

189369994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722.

The product of its digits is 3779136, while the sum is 58.

The square root of 189369994 is about 13761.1770572143. The cubic root of 189369994 is about 574.2535938300.

The spelling of 189369994 in words is "one hundred eighty-nine million, three hundred sixty-nine thousand, nine hundred ninety-four".