189017973 has 24 divisors (see below), whose sum is σ = 280800000. Its totient is φ = 122462304.

The previous prime is 189017971. The next prime is 189017999. The reversal of 189017973 is 379710981.

It is not a de Polignac number, because 189017973 - 2¹ = 189017971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189017971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61528 + ... + 64526.

It is an arithmetic number, because the mean of its divisors is an integer number (11700000).

Almost surely, 2^189017973 is an apocalyptic number.

It is an amenable number.

189017973 is a deficient number, since it is larger than the sum of its proper divisors (91782027).

189017973 is a wasteful number, since it uses less digits than its factorization.

189017973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201 (or 3198 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The square root of 189017973 is about 13748.3807410182. The cubic root of 189017973 is about 573.8975453197.

The spelling of 189017973 in words is "one hundred eighty-nine million, seventeen thousand, nine hundred seventy-three".