189745471966 has 8 divisors (see below), whose sum is σ = 286048450800. Its totient is φ = 94395988368.

The previous prime is 189745471957. The next prime is 189745471973. The reversal of 189745471966 is 669174547981.

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, 238373311 + ... + 238374106.

It is an arithmetic number, because the mean of its divisors is an integer number (35756056350).

Almost surely, 2^189745471966 is an apocalyptic number.

189745471966 is a deficient number, since it is larger than the sum of its proper divisors (96302978834).

189745471966 is a wasteful number, since it uses less digits than its factorization.

189745471966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476747618.

The product of its digits is 91445760, while the sum is 67.

The spelling of 189745471966 in words is "one hundred eighty-nine billion, seven hundred forty-five million, four hundred seventy-one thousand, nine hundred sixty-six".