189194369 has 16 divisors (see below), whose sum is σ = 233880192. Its totient is φ = 149033088.

The previous prime is 189194359. The next prime is 189194387. The reversal of 189194369 is 963491981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189194369 is a prime.

It is a super-2 number, since 2×189194369² = 71589018522616322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189194359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16742 + ... + 25664.

It is an arithmetic number, because the mean of its divisors is an integer number (14617512).

Almost surely, 2^189194369 is an apocalyptic number.

It is an amenable number.

189194369 is a deficient number, since it is larger than the sum of its proper divisors (44685823).

189194369 is a wasteful number, since it uses less digits than its factorization.

189194369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9176.

The product of its digits is 419904, while the sum is 50.

The square root of 189194369 is about 13754.7944004990. The cubic root of 189194369 is about 574.0760146915.

The spelling of 189194369 in words is "one hundred eighty-nine million, one hundred ninety-four thousand, three hundred sixty-nine".