189031328712 has 36 divisors (see below), whose sum is σ = 511969840395. Its totient is φ = 63009213168.

The previous prime is 189031328711. The next prime is 189031328741. The reversal of 189031328712 is 217823130981.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 94515664356 + 94515664356 = 307434^2 + 307434^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=307434.

It is not an unprimeable number, because it can be changed into a prime (189031328711) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3663589 + ... + 3714827.

Almost surely, 2^189031328712 is an apocalyptic number.

189031328712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189031328712 is an abundant number, since it is smaller than the sum of its proper divisors (322938511683).

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

189031328712 is an frugal number, since it uses more digits than its factorization.

189031328712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102490 (or 51244 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 189031328712 in words is "one hundred eighty-nine billion, thirty-one million, three hundred twenty-eight thousand, seven hundred twelve".