189844845 has 8 divisors (see below), whose sum is σ = 303751776. Its totient is φ = 101250576.

The previous prime is 189844843. The next prime is 189844877. The reversal of 189844845 is 548448981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189844845 - 2¹ = 189844843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189844843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6328147 + ... + 6328176.

It is an arithmetic number, because the mean of its divisors is an integer number (37968972).

Almost surely, 2^189844845 is an apocalyptic number.

189844845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189844845 is a deficient number, since it is larger than the sum of its proper divisors (113906931).

189844845 is a wasteful number, since it uses less digits than its factorization.

189844845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12656331.

The product of its digits is 1474560, while the sum is 51.

The square root of 189844845 is about 13778.4195392650. The cubic root of 189844845 is about 574.7331792923.

The spelling of 189844845 in words is "one hundred eighty-nine million, eight hundred forty-four thousand, eight hundred forty-five".