189627881642 has 8 divisors (see below), whose sum is σ = 284720416932. Its totient is φ = 94721076000.

The previous prime is 189627881623. The next prime is 189627881683. The reversal of 189627881642 is 246188726981.

189627881642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 189330284641 + 297597001 = 435121^2 + 17251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46429859 + ... + 46433942.

Almost surely, 2^189627881642 is an apocalyptic number.

189627881642 is a deficient number, since it is larger than the sum of its proper divisors (95092535290).

189627881642 is a wasteful number, since it uses less digits than its factorization.

189627881642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92864824.

The product of its digits is 18579456, while the sum is 62.

The spelling of 189627881642 in words is "one hundred eighty-nine billion, six hundred twenty-seven million, eight hundred eighty-one thousand, six hundred forty-two".