189663976044 has 54 divisors (see below), whose sum is σ = 501179438396. Its totient is φ = 60472566000.

The previous prime is 189663976003. The next prime is 189663976081. The reversal of 189663976044 is 440679366981.

189663976044 is a `hidden beast` number, since 18 + 9 + 6 + 6 + 3 + 9 + 7 + 604 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4960582 + ... + 4998669.

Almost surely, 2^189663976044 is an apocalyptic number.

It is an amenable number.

189663976044 is an abundant number, since it is smaller than the sum of its proper divisors (311515462352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189663976044 is a wasteful number, since it uses less digits than its factorization.

189663976044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9959307 (or 9959279 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 189663976044 in words is "one hundred eighty-nine billion, six hundred sixty-three million, nine hundred seventy-six thousand, forty-four".