189805244 has 6 divisors (see below), whose sum is σ = 332159184. Its totient is φ = 94902620.

The previous prime is 189805237. The next prime is 189805247. The reversal of 189805244 is 442508981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189805247) 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 as a sum of consecutive naturals, namely, 23725652 + ... + 23725659.

It is an arithmetic number, because the mean of its divisors is an integer number (55359864).

Almost surely, 2^189805244 is an apocalyptic number.

It is an amenable number.

189805244 is a deficient number, since it is larger than the sum of its proper divisors (142353940).

189805244 is a wasteful number, since it uses less digits than its factorization.

189805244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47451315 (or 47451313 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 189805244 is about 13776.9823981887. The cubic root of 189805244 is about 574.6932140400.

The spelling of 189805244 in words is "one hundred eighty-nine million, eight hundred five thousand, two hundred forty-four".