189195449 has 16 divisors (see below), whose sum is σ = 203136000. Its totient is φ = 175815360.

The previous prime is 189195437. The next prime is 189195463. The reversal of 189195449 is 944591981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189195449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 189195397 and 189195406.

It is not an unprimeable number, because it can be changed into a prime (189194449) 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, 205412 + ... + 206330.

It is an arithmetic number, because the mean of its divisors is an integer number (12696000).

Almost surely, 2^189195449 is an apocalyptic number.

It is an amenable number.

189195449 is a deficient number, since it is larger than the sum of its proper divisors (13940551).

189195449 is a wasteful number, since it uses less digits than its factorization.

189195449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208.

The product of its digits is 466560, while the sum is 50.

The square root of 189195449 is about 13754.8336594813. The cubic root of 189195449 is about 574.0771070441.

The spelling of 189195449 in words is "one hundred eighty-nine million, one hundred ninety-five thousand, four hundred forty-nine".