189571966 has 8 divisors (see below), whose sum is σ = 284664240. Its totient is φ = 94683888.

The previous prime is 189571951. The next prime is 189571973. The reversal of 189571966 is 669175981.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48706 + ... + 52453.

It is an arithmetic number, because the mean of its divisors is an integer number (35583030).

Almost surely, 2^189571966 is an apocalyptic number.

189571966 is a deficient number, since it is larger than the sum of its proper divisors (95092274).

189571966 is a wasteful number, since it uses less digits than its factorization.

189571966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102098.

The product of its digits is 816480, while the sum is 52.

The square root of 189571966 is about 13768.5135726410. The cubic root of 189571966 is about 574.4576774425.

The spelling of 189571966 in words is "one hundred eighty-nine million, five hundred seventy-one thousand, nine hundred sixty-six".