189609984028 has 6 divisors (see below), whose sum is σ = 331817472056. Its totient is φ = 94804992012.

The previous prime is 189609983989. The next prime is 189609984029. The reversal of 189609984028 is 820489906981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189609984029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23701248000 + ... + 23701248007.

Almost surely, 2^189609984028 is an apocalyptic number.

It is an amenable number.

189609984028 is a deficient number, since it is larger than the sum of its proper divisors (142207488028).

189609984028 is a wasteful number, since it uses less digits than its factorization.

189609984028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47402496011 (or 47402496009 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 64.

The spelling of 189609984028 in words is "one hundred eighty-nine billion, six hundred nine million, nine hundred eighty-four thousand, twenty-eight".