189185986912 has 48 divisors (see below), whose sum is σ = 406188095040. Its totient is φ = 86211320832.

The previous prime is 189185986879. The next prime is 189185986931. The reversal of 189185986912 is 219689581981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2845453 + ... + 2911180.

It is an arithmetic number, because the mean of its divisors is an integer number (8462251980).

Almost surely, 2^189185986912 is an apocalyptic number.

It is an amenable number.

189185986912 is an abundant number, since it is smaller than the sum of its proper divisors (217002108128).

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

189185986912 is a wasteful number, since it uses less digits than its factorization.

189185986912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5756735 (or 5756727 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 67.

The spelling of 189185986912 in words is "one hundred eighty-nine billion, one hundred eighty-five million, nine hundred eighty-six thousand, nine hundred twelve".