189295531208 has 64 divisors (see below), whose sum is σ = 415527045120. Its totient is φ = 79152091200.

The previous prime is 189295531207. The next prime is 189295531231. The reversal of 189295531208 is 802135592981.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 189295531208.

It is not an unprimeable number, because it can be changed into a prime (189295531207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2150543 + ... + 2236833.

It is an arithmetic number, because the mean of its divisors is an integer number (6492610080).

Almost surely, 2^189295531208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189295531208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207763522560).

189295531208 is an abundant number, since it is smaller than the sum of its proper divisors (226231513912).

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

189295531208 is a wasteful number, since it uses less digits than its factorization.

189295531208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87258 (or 87254 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 53.

The spelling of 189295531208 in words is "one hundred eighty-nine billion, two hundred ninety-five million, five hundred thirty-one thousand, two hundred eight".