189361185418 has 16 divisors (see below), whose sum is σ = 291235976136. Its totient is φ = 92286754560.

The previous prime is 189361185413. The next prime is 189361185427. The reversal of 189361185418 is 814581163981.

It can be written as a sum of positive squares in 4 ways, for example, as 189358133409 + 3052009 = 435153^2 + 1747^2 .

It is not an unprimeable number, because it can be changed into a prime (189361185413) 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 7 ways as a sum of consecutive naturals, for example, 966771 + ... + 1146022.

Almost surely, 2^189361185418 is an apocalyptic number.

189361185418 is a deficient number, since it is larger than the sum of its proper divisors (101874790718).

189361185418 is a wasteful number, since it uses less digits than its factorization.

189361185418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113929.

The product of its digits is 1658880, while the sum is 55.

The spelling of 189361185418 in words is "one hundred eighty-nine billion, three hundred sixty-one million, one hundred eighty-five thousand, four hundred eighteen".