189964250736 has 80 divisors (see below), whose sum is σ = 545538416640. Its totient is φ = 56565031680.

The previous prime is 189964250731. The next prime is 189964250737. The reversal of 189964250736 is 637052469981.

It is a self number, because there is not a number n which added to its sum of digits gives 189964250736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189964250731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4890816 + ... + 4929503.

It is an arithmetic number, because the mean of its divisors is an integer number (6819230208).

It is a 1-persistent number, because it is pandigital, but 2⋅189964250736 = 379928501472 is not.

Almost surely, 2^189964250736 is an apocalyptic number.

189964250736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189964250736 is an abundant number, since it is smaller than the sum of its proper divisors (355574165904).

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

189964250736 is a wasteful number, since it uses less digits than its factorization.

189964250736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9820374 (or 9820368 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 189964250736 in words is "one hundred eighty-nine billion, nine hundred sixty-four million, two hundred fifty thousand, seven hundred thirty-six".