189666763924 has 24 divisors (see below), whose sum is σ = 362128497696. Its totient is φ = 86203260000.

The previous prime is 189666763907. The next prime is 189666763933. The reversal of 189666763924 is 429367666981.

It is a self number, because there is not a number n which added to its sum of digits gives 189666763924.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 217959 + ... + 653329.

It is an arithmetic number, because the mean of its divisors is an integer number (15088687404).

Almost surely, 2^189666763924 is an apocalyptic number.

It is an amenable number.

189666763924 is a deficient number, since it is larger than the sum of its proper divisors (172461733772).

189666763924 is a wasteful number, since it uses less digits than its factorization.

189666763924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445287 (or 445285 counting only the distinct ones).

The product of its digits is 141087744, while the sum is 67.

The spelling of 189666763924 in words is "one hundred eighty-nine billion, six hundred sixty-six million, seven hundred sixty-three thousand, nine hundred twenty-four".